A Comparison between Inferior Alveolar Nerve Block and Crestal Anesthesia in Children Undergoing Dental Extraction Procedure

ABSTRACT Objective: To evaluate the efficacy of crestal anesthesia compared to the inferior alveolar nerve block (IANB) in 6-9-year-old children undergoing tooth extraction. Material and Methods: This case-control study was conducted on 70 children who needed bilateral mandibular primary molar extractions. The Faces Pain Scale was used to determine the efficacy of the anesthetic technique. Demographic data, onset time of anesthesia, duration of anesthesia, and blood pressure were also recorded. The data were analyzed using SPSS 25 and analytical tests: t-test, chi-squared test, and one-way ANOVA. The level of significance was set at p<0.05. Results: The efficacy of the IANB was significantly higher than the crestal anesthesia (p<0.05). The duration of IANB anesthesia was significantly more than the crestal anesthesia (p<0.05). The two anesthetic techniques showed no significant differences in pediatric blood pressure as a determinant of the pain evoked in children during the injection (p>0.05). Conclusion: Crestal anesthesia proved an effective method to extract primary molars. However, further studies are necessary to confirm this.

Lingual supplementation may not be required after articaine buccal infiltration anesthesia for lower molar extraction: a clinical comparative study / La suplementación lingual opcional después de la anestesia por infiltración bucal con articaína para la extracción de molares inferiores: un estudio clínico comparativo

Purpose: To investigate the anesthetic effectiveness of buccal infiltration (BI) versus buccal plus lingual infiltration (BI+LI) of 4% articaine for intra-alveolar extraction of erupted mandibular molar teeth. Material and Methods: Eighty patients were included in this prospective clinical study. They were randomly divided into 1 of 2 equal groups: the 1st group received BI of 4% articaine 1.8 ml and LI of 0.5 ml, while the 2nd group received 4% articaine 1.8 ml BI plus 0.5 ml LI of normal saline. Another 1.8 ml articaine BI was given if initial anesthesia was inadequate. Outcome variables included pain, which was rated by patients at 3 intervals using visual analogue scale, and lingual anesthesia and patients' satisfaction which were measured using 5-score verbal rating scale. Data analyses used were descriptive statistics, t test, χ2 test, and Pearson's correlation coefficient. P-value value less than 0.05 was considered significant. Results: There were 46 females and 34 males and the mean age was 35.3 years. All outcome variables were comparable between the two study groups (p˃0.05). Anesthesia was successful in 78% and 88% of cases in the (BI) and (BI+LI) groups respectively with no significant difference (p=0.2392). The mean articaine volume used was 2.5 ml and 2.87 ml respectively without significant difference (p=0.090). Conclusion: The anesthetic efficacy of (BI) alone and (BI+LI) of 4% articaine was comparable. When given in an adequate dose, articaine (BI) alone could be justified as an anesthetic option for the intra-alveolar extraction of mandibular molar teeth.

Objetivo: Investigar la efectividad anestésica de la infiltración bucal (BI) versus la infiltración bucal más lingual (BI+LI) de articaína al 4% para la extracción intraalveolar de molares mandibulares erupcionados. Material y Métodos: Ochenta pacientes fueron incluidos en este estudio clínico prospectivo. Se dividieron aleatoriamente en 1 de 2 grupos iguales: el primer grupo recibió BI de articaína al 4% 1,8 ml y LI de 0,5 ml, mientras que el segundo grupo recibió articaína al 4% 1,8 ml BI más 0,5 ml LI de solución salina normal. Se administró otro BI de articaína de 1,8 ml si la anestesia inicial era inadecuada. Las variables de resultado incluyeron el dolor, que los pacientes calificaron en 3 intervalos mediante una escala analógica visual, y la anestesia lingual y la satisfacción de los pacientes, que se midieron mediante una escala de calificación verbal de 5 puntos. Los análisis de datos utilizados fueron estadística descriptiva, prueba t, prueba χ2 y coeficiente de correlación de Pearson. Se consideró significativo el valor del valor de pinferior a 0,05. Resultados: Hubo 46 mujeres y 34 hombres y la edad media fue de 35,3 años. Todas las variables de resultado fueron comparables entre los dos grupos de estudio (p=0,05). La anestesia fue exitosa en el 78% y 88% de los casos en los grupos (BI) y (BI+LI) respectivamente sin diferencia significativa (p=0,2392). El volumen medio de articaína utilizado fue de 2,5 ml y 2,87 ml respectivamente sin diferencia significativa (p=0,090). Conclusión: La eficacia anestésica de (BI) solo y (BI+LI) de articaína al 4% fue comparable. Cuando se administra en una dosis adecuada, la articaína (BI) sola podría estar justificada para la extracción intraalveolar de molares mandibulares.

Ansiedad de niños y padres durante la anestesia dental: informe de 10 casos clínicos / Ansiedade da criança e dos pais durante a anestesia odontologica: relato de 10 casos clínicos / Anxiety of children and parents during dental anesthesia: report of 10 clinical cases

El miedo y la ansiedad son emociones que casi siempre se presentan en las visitas al odontólogo, especialmente durante el momento de la anestesia. El objetivo de este estudio fue evaluar el grado de ansiedad tanto del niño como la de sus padres durante la anestesia dental. Se seleccionaron 10 niños, con edades comprendidas entre los 3 y los 7 años, los cuales debían someterse a anestesia local para realizar un procedimiento dental. Como criterio de inclusión, todos los niños nunca habían sido sometidos a anestesia y era necesario que la anestesia se aplicara en la misma región para todos los niños. Para complementar el estudio, y verificar la influencia de los padres, se llevó a cabo un cuestionario para comprender mejor la experiencia dental que habían tenido los padres y así tratar de asociarla con el comportamiento de sus hijos. Durante la anestesia, los padres también fueron monitoreados con el uso de un oxímetro digital de pulso. Se puede concluir que los representantes tienen una gran influencia en las reacciones de los niños durante el cuidado dental, y ésta afecta directamente el tratamiento del niño

O medo e ansiedade são emoções quase sempre presentes nas consultas odontológicas principalmente no momento da anestesia. O objetivo deste trabalho foi verificar o grau de ansiedade das crianças e seus respectivos pais durante a anestesia dentária. Foram selecionadas 10 crianças, com idade entre 3 a 7 anos e que precisavam ser submetidas a anestesia local para realizar algum procedimento odontológico. Como critério de inclusão, todas as crianças nunca tinham sido anestesia e era necessário que a aplicação de anestesia fosse na mesma região para todas as crianças. Para complementar o estudo, e verificar a influência dos pais, foi aplicado um questionário para conhecer melhor a experiência odontológica que os pais já tiveram e assim tentar associar com o comportamento do filhos. Durante a anestesia os pais também foram monitorados com uso de oximetro digital de pulso. Concluímos os responsáveis possuem grande influência referente as reações das crianças durante o atendimento odontológico podendo assim afetar diretamente o tratamento da criança

Fear and anxiety are emotions almost always present in dental appointments, especially during anesthesia. The aim of this study was to verify the degree of anxiety of children and their parents during dental anesthesia. 10 children were selected, aged between 3 and 7 years old and who needed to undergo local anesthesia to perform a dental procedure. As an inclusion criterion, all children had never undergone anesthesia and it was necessary that the application of anesthesia was in the same region for all children. To complement the study and verify the influence of parents, a questionnaire was applied to better understand the dental experience that the parents had already had and thus try to associate it with their children's behavior. During anesthesia, parents were also monitored using a digital pulse oximeter. We conclude Parents and guardians have a great influence on the reactions of children during dental care, which can thus directly affect the child's treatment.

Guideline of nitrous oxide-oxygen inhalation sedation technique in dental outpatient / 中华口腔医学杂志

The use of nitrous oxide-oxygen inhalation sedation to relieve anxiety and pain in dental outpatient treatment has been a very mature and safe technique in the world. This technology has been introduced into China for nearly 20 years, and many clinical cases have proved its safety, practicability and effectiveness, which can meet the clinical needs of patients. To further standardize and popularize this technique, the Society of Sedation and Analgesia, Chinese Stomatological Association formed the recommended application guidelines after many discussions and revisions on the basis of widely soliciting opinions and referring to relevant literatures. It covers indications, contraindications, standardized operation procedures, occupational protection, identification and treatment of adverse reactions, training and other aspects. This guideline can be used as a reference for the use of nitrous oxide-oxygen inhalation sedation techniques in the outpatient setting of dentistry.

Patterns of Paediatric Dental Treatment Under General Anaesthesia: A Retrospective Study

ABSTRACT@#This retrospective study aimed to evaluate patterns of comprehensive dental treatment under general anaesthesia (GA) for healthy children in Universiti Teknologi MARA, Malaysia. The treatment records of healthy paediatric patients who received dental treatment under GA from February 2017 to January 2021 were reviewed. The patients were divided into two groups: (1) less than 6 years old and (2) 6 to 16 years old. Patients’ characteristics were summarised using descriptive statistics while an independent t-test was applied to investigate the influence of “age group” on treatment duration, number of procedures and use of various restorative materials. A total of 125 paediatric patients (67 boys and 58 girls) were included. The patients’ mean age at the time they underwent GA was 5.77 ± 1.94 years old and the average duration of dental treatment was 62.58 minutes. There was a significant difference in the duration of treatment between the two age groups (p < 0.05). Tooth extraction was the most dental procedure performed (63.31%). The 6 to 16 years old group had a significantly shorter treatment duration (p < 0.05). However, no significant differences were found in all procedures (extraction, restoration, preventive and pulp therapy) and the utilisation of composite, glass ionomer cement (GIC) and compomer in both groups. The use of stainless steel crown (SSC) restorations was significantly higher in the less than six years old group (p < 0.05). Most of the dental procedures performed under GA on healthy children were extraction procedures. Children less than six years of old had a longer treatment duration under GA. Composite restorations and SSC were more frequently used in primary dentition.

Inervación suplementaria de la mandíbula y sus Implicancias clínicas: revisión narrativa / Supplemental innervation of the mandible and it´s clinical implications: narrative review

RESUMEN: En condiciones normales, la mandíbula y sus estructuras anatómicas (dientes, musculatura, piel), son inervadas por los ramos de la tercera división del nervio trigémino (nervio mandibular), sin embargo, existen reportes que evidencian inervación suplementaria de los dientes inferiores y la zona del ángulo mandibular. Lo último podría ser responsable del fracaso del bloqueo nervioso con anestesia local. El objetivo principal de esta investigación fue revisar artículos que describen la participación de otros nervios como el milohioideo y los ramos superficiales del plexo cervical, los cuales pueden ingresar a la mandíbula a través de forámenes ubicados a lo largo de su arquitectura. Para esto, se realizó una revisión narrativa de la literatura científica, en inglés y español, desde el año 1971 hasta el año 2019, utilizando las plataformas digitales PubMed, EBSCO, Cochrane library, Scielo y Google Scholar, literatura gris y además de una búsqueda manual. Acorde a los resultados de la revisión, se confirma la existencia de fracasos de técnicas anestésicas mandibulares debido a la inervación accesoria de la mandíbula y de los dientes inferiores, donde los tres principales nervios revisados tienen incidencia en este postulado. Finalmente se plantea un orden de ejecución para realizar la infiltración de anestésico local en la mandíbula para lograr un bloqueo exitoso durante los procedimientos odontológicos que la requieran.

SUMMARY: Under normal conditions, the mandible and its anatomical structures (teeth, muscles, skin) are innervated by the branches of the third division of the trigeminal nerve (mandibular nerve), however, there are reports that show supplementary innervation of the lower teeth and the mandibular angle area. The latter could be responsible for the failure of the nerve block under local anesthesia. The main objective of this research; is to review articles that describe the participation of other nerves such as the mylohyoid nerve, and the superficial branches of the cervical plexus, which can enter the mandible through foramina located along its architecture. For this, a narrative review of the scientific literature was carried out, in English and Spanish, from 1971 to 2019, using the digital platforms PubMed, EBSCO, Cochrane library, Scielo and Google Scholar, gray literature and in addition to a search Handbook. According to the results of the review, the existence of the failures of the mandibular anesthetic techniques due to the accessory innervation of the mandible and the lower teeth is confirmed, where the three main nerves reviewed have an impact on this postulate. In conclusion, an order of execution is proposed to perform local anesthetic infiltration into the jaw to achieve a successful block during dental procedures that require it.

Una nueva alternativa para la localización y la recuperación de agujas fracturadas durante la anestesia odontológica. Presentación de técnica y caso clínico / A new alternative for locating and removing a needle fractured during dental anesthesia. Technique and case report

Objetivo: Describir en un caso clínico una nueva técni- ca para la localización y la remoción de agujas fracturadas du- rante la anestesia odontológica mediante planificación virtual. Caso clínico: Una paciente de género femenino de 52 años de edad concurre a la Cátedra de Cirugía y Traumatolo- gía Bucomaxilofacial I de la Facultad de Odontología de la Universidad de Buenos Aires y relata que dos meses atrás, durante la atención odontológica, se produjo la fractura de la aguja durante la anestesia troncular mandibular. Se realiza diagnóstico y planificación virtual para conocer la ubicación exacta de la aguja y se confecciona un modelo estereolito- gráfico y una guía quirúrgica individualizada para removerla. El uso de una guía quirúrgica individualizada y confeccio- nada mediante planificación virtual permitió ubicar la aguja tridimensionalmente y con mayor precisión en espacios pro- fundos y disminuir tiempos operatorios (AU)

Aim: To describe in a clinical case a new virtual plan- ning technique for locating and removing a fractured dental anesthetic needle. Clinical case: A 52-year-old patient visited the De- partment of Oral and Maxillofacial Surgery I (School of Dentistry, University of Buenos Aires) with a retained den- tal needle in the pterygomandibular space. The needle had fractured during inferior alveolar nerve block two months previously. Virtual diagnosis and planning were performed to locate the needle and a stereolithographic model and a customized surgical guide were prepared. The use of cus- tomized surgical guides prepared by virtual planning ena- bled precise location of the dental needle in deep spaces and reduced operating times (AU)

Efficacy of Higher Gauged Needles or Topical Pre-Cooling for Pain Reduction during Local Anesthesia Injection: A Split-Mouth Randomized Trial

ABSTRACT Objective: To evaluate the efficacy of pre-cooling and the use of higher gauged needles in reducing pain during local anesthetic infiltration. Material and Methods: We conducted a split-mouth randomized controlled trial among 70 patients who require bilateral maxillary local anesthetic (LA) injections for dental treatment. After applying the topical anesthetic, each participant received four local anesthetic injections, two on buccal and two palatal sides. At each visit, the participants received one buccal and one palatal infiltration based on the randomization. On the buccal aspect, participants received LA with a 26G needle injection on one side (control) and a 31G needle (test) on the contralateral side. On the Palatal aspect, participants either received LA with a 31G needle on one side (control). In contrast, the opposite side was preceded by topical ice application (iced cotton swab) before LA with a 31G needle (test). Both the visits were spaced with a gap of 7-10 days based on the participants' feasibility. Participants were asked to rate the pain on a visual analog scale independently for buccal and palatal LA injections. Results: On the Buccal aspect, the mean pain scores were 2.74 ± 1.26 and 2.11 ± 1.26 for control and test groups, respectively (p=0.002). On the Palatal aspect, the mean pain scores were 4.14 ± 1.49 and 4.3 ± 1.80 for control and test groups, respectively (p=0.295). Conclusion: Significant lower pain scores were reported with higher gauge needles (31G) when compared to traditional (26G) needles on the buccal aspect. No significant difference was seen with pre-cooling the injection site on the palatal aspect when used with higher gauged needles (31G) (AU).

Efficacy of audiovisual distraction using eyeglasses during dental care: a randomized clinical trial

Abstract This randomized parallel-group control trial tested the efficacy of distraction using audiovisual eyeglasses (AVE) during dental procedures [NCT03902158]. Forty-four 6-9 year-old children with low/moderate anxiety and who needed restorative treatment or exodontia of the primary molars were randomly allocated into two groups: the AVE (experimental) and the conventional behavior management techniques (control) groups. Motion sensors were used to measure the participants' body movements. Dental visits were video recorded, and their pain levels and behavior were assessed using the Faces, Legs, Activity, Cry, and Consolability Behavioral Pain Assessment Scale and the Venham Behavioral Scale, respectively. Anxiety was assessed via heart rate measurements. After treatment, the children scored their pain using the Faces Pain Scale. Mann-Whitney U and chi-square tests were used to compare the groups. The mean score on the behavioral scale was 0.59 in the experimental group and 0.72 in the control group under local anesthesia (p = 0.73). During the procedure, the mean score was 0.41 in the experimental group and 1.32 in the control group (p = 0.07). The mean heart rate was similar in both groups (p = 0.47), but a significant increase during treatment was observed in the control group. There was no difference between the groups in terms of pain, behavior, and self-reported pain scores (p = 0.08). Children aged 6-7 who used the AVE had fewer wrist movements (435.6) than that of children in the control group (1170.4) (p = 0.04). The AVE achieved similar results to the basic behavior management techniques, with good acceptance by the children.

Guideline on the use of general anesthesia for pediatric dentistry dental procedure / 中华口腔医学杂志

In recent years, dental treatments of the outpatient children under general anesthesia has gradually developed as a relatively mature behavior management model. Due to the limited operating time and the large patient flow of children in outpatient clinics, higher requirements of management are proposed both in anesthesia and dental treatment phases. The Society of Sedation and Analgesia of the Chinese Stomatological Association organized experts to formulate a guideline of dental treatments of children under general anesthesia in outpatient clinic. The guideline would provide operable implementing criteria for the entire process including general anesthesia in the dental clinics, basic clinical conditions, types of oral diagnosis and treatment, evaluation and preparation before diagnosis and treatment, anesthesia implementation and monitoring, management during the recovery period, common complications and key points of treatments. This guideline will play an important role in the rapid development of the safe and comfort dental treatments of children under general anesthesia in China.

Evaluation of therapeutic effect and health economics of general anesthesia and routine outpatient dental treatment in children with severe early child caries / 华西口腔医学杂志

OBJECTIVES@#To evaluate the efficacy and health economics of the comprehensive therapy for the children with severe early child caries (S-ECC) under dental general anesthesia (DGA) and conventional outpatient treatment to provide references for dentists and parents in the choice of clinical treatment.@*METHODS@#A retrospective cohort study was conducted on S-ECC children aged 36-71 months and who received dental treatment under general anesthesia or routine outpatient situation. The filled tooth survival rate, treatment cost, and cost-filled tooth survival time of the two groups were compared, and the curative effect and health economics was evaluated.@*RESULTS@#The filled tooth survival rate of the DGA group was higher than that of the routine outpatient group (@*CONCLUSIONS@#Compared with the conventional outpatient treatment group, the treatment outcomes of S-ECC under general anesthesia were better, and the costs were higher. However, no significant difference was observed in the total medical cost-filled tooth survival time between these two groups, and the conventional outpatient treatment did not have evident economic advantages.

A propósito de la crioanestesia dental / Apropos dental cryoanesthesia

RESUMEN Introducción: La crioanestesia es una forma de anestesia tópica utilizada en procedimientos médicos menores aprovechando el descenso o inhibición del umbral doloroso causado por el estímulo térmico. Es posible emplearla en procedimientos sobre tejidos dentales para complementar la anestesia con fármacos y combatir el fracaso anestésico. Objetivo: Describir los hallazgos sobre el uso y aplicación de la crioanestesia dental en odontología. Métodos: Revisión exploratoria de la literatura científica y gris, donde se evaluó la disminución de la sensación dolorosa empleando frío sin alcanzar congelación del tejido dental. Fueron consultadas las bases de datos Pubmed, Embase, Scopus, SciELO, Elsevier y Science Direct. La búsqueda en Google Académico se realizó eliminando las entradas repetidas y limitada a los 100 primeros resultados. La investigación cubrió el periodo de 1941 hasta diciembre de 2018 y se utilizó la lista de comprobación PRISMA para ejecutar la revisión. Resultados: Cuatro artículos fueron seleccionados. Todos emplearon diferentes dispositivos, refrigerantes y escalas para valoración del dolor; sin embargo, todos reportaron ausencia de dolor en algunas de sus muestras. Conclusión: Se identificó evidencia escasa y antigua con desigualdad en las escalas de valoración, protocolos clínicos, sustancias refrigerantes y dispositivos utilizados(AU)

ABSTRACT Introduction: Cryoanesthesia is a type of topical anesthesia used in minor medical procedures. It is based on the descent or inhibition of the pain threshold caused by the thermal stimulus. Cryoanesthesia may be used in procedures performed on dental tissues to complement anesthetic drugs and combat anesthetic failure. Objective: Describe the findings about the use and application of cryoanesthesia in dental practice. Methods: An exploratory review was conducted of scientific and grey literature to evaluate pain reduction using cold temperatures without freezing the dental tissue. The databases consulted were Pubmed, Embase, Scopus, SciELO, Elsevier and Science Direct. The search in Google Scholar removed repeated entries and was limited to the first 100 results. The study covered the period extending from 1941 to December 2018, and used the PRISMA checklist to carry out the review. Results: Four papers were selected. All four used different devices, refrigerants and pain assessment scales. However, they all reported an absence of pain in some of their samples. Conclusion: Scant, outdated evidence was identified which contained discrepancies in the assessment scales, clinical protocols, refrigerant substances and devices used(AU)

Lidocaína 2 % con adrenalina 1: 80000 alcalinizada con bicarbonato de sodio 8, 4 % en la anestesia dental / Lidocaine 2% with adrenaline 1: 80,000 alkalinized with sodium bicarbonate 8. 4 % in dental anesthesia

Introducción: La alcalinización de la lidocaína ha resultado ser exitosa en el bloqueo del nervio dentario inferior, sin embargo, existen resultados contradictorios respecto a su eficacia clínica. Objetivo: Determinar el efecto de la lidocaína 2 por ciento con adrenalina 1:80000 alcalinizada con bicarbonato de sodio al 8,4 % sobre el bloqueo del nervio dentario inferior. Material y métodos: Estudio experimental, prospectivo y longitudinal conformado por 50 pacientes de la Facultad de Odontología de la Universidad Nacional Mayor de San Marcos. Las siguientes soluciones fueron administradas para el bloqueo del nervio dentario inferior: lidocaína 2 por ciento con adrenalina 1:80000 alcalinizada con bicarbonato de sodio al 8,4 por ciento y lidocaína 2 por ciento con adrenalina 1:80000 no alcalinizada. Se evaluó la intensidad del dolor por la inyección, parámetros hemodinámicos y periodos anestésicos (tiempo de inicio de acción y duración del efecto anestésico). Resultados: Se evidenció una menor intensidad del dolor por la inyección en el grupo de lidocaína alcalinizada (19,16 ± 2,7) en comparación al grupo de lidocaína no alcalinizada (22,88 ± 4,2); p=0,02. Así mismo, el tiempo de inicio de acción fue menor en el grupo de lidocaína alcalinizada (105,72 ± 9,7s) en comparación con el grupo de lidocaína no alcalinizada (157,52 ± 12,1); p=0,002. Sin embargo, no se evidenciaron diferencias significativas en los parámetros hemodinámicos (p>0,05) y la duración del efecto anestésico (p=0,114). Conclusiones: La lidocaína 2 por ciento con adrenalina 1:80000 alcalinizada con bicarbonato de sodio al 8,4 por ciento sobre el bloqueo del nervio dentario inferior produce una disminución de la intensidad del dolor por la inyección y del tiempo de inicio de acción, en comparación con la formulación no alcalinizada. Sin embargo, no se evidencian diferencias en relación con los parámetros hemodinámicos ni a la duración del efecto anestésico(AU)

Introduction: The alkalinization of lidocaine has been successful in blocking the inferior dental nerve; however, there are contradictory results regarding its clinical efficacy. Objective: To determine the effect of 2 percent lidocaine with 1: 80,000 adrenaline alkalinized with 8.4 percent sodium bicarbonate on inferior dental nerve block. Material and methods: Experimental, prospective and longitudinal study that comprised 50 patients from the Dental School of the National University of San Marcos. The following solutions were administered for inferior dental nerve block: 2 percent lidocaine with epinephrine 1: 80,000 alkalinized with 8.4 percent sodium bicarbonate and 2 percent lidocaine with 1: 80,000 adrenaline not alkalinized. Pain intensity was evaluated by injection, hemodynamic parameters and anesthetic periods (time of onset of action and duration of the anesthetic effect). Results: There was a lower pain intensity due to injection in the alkalized lidocaine group (19.16 ± 2.7) compared to the non-alkalinized lidocaine group (22.88 ± 4.2); p=0.02. Likewise, the onset time of action was lower in the alkalized lidocaine group (105.72 ± 9.7) compared to the non-alkalinized lidocaine group (157.52 ± 12.1); p=0.002. However, no significant differences were found in the hemodynamic parameters (p>0.05) and the duration of the anesthetic effect (p=0.114). Conclusions: Lidocaine 2 percent with adrenaline 1: 80,000 alkalized with sodium bicarbonate at 8.4 percent on the block of the inferior dental nerve produces a decrease in pain intensity due to injection and the time of onset of action, compared to the non-alkalinized formulation. However, there are no differences in relation to the hemodynamic parameters or the duration of the anesthetic effect(AU)

Deflexión de agujas dentales 30G: comparación de cinco marcas comerciales / Deflection of dental needles 30G: comparison of five trademarks

Abstract Introducción: El grado o nivel de deflexión de la aguja dental, en la mayoría de los casos, puede determinar el éxito o fracaso en la técnica de anestesia dental. Objetivo: Medir el grado de deflexión de la aguja dental, comparando 5 diferentes marcas disponibles en la ciudad de Hermosillo, Sonora, México. Métodos: Se realizó un estudio experimental, en el que con ayuda de un modelo creado con un nivel profesional y una jeringa tipo cárpul, se realizaron diversas punciones en un trozo de carne de res, simulando la realización de una técnica lineal de anestesia bucodental. Se tomaron radiografías periapicales de cada una de las punciones, y con ayuda de una malla milimetrada, se realizaron las mediciones. Dentro de cada grupo de agujas, se presentaron diferentes medidas de deflexión, y se obtuvo un promedio de cada marca. El rango abarcó desde los .65 mm hasta 2.1 mm de deflexión, tomando como referencia un plano recto. Conclusiones: Se demostró que la de la marca Septodont®, fue la que presentó menor deflexión a la punción. Es recomendable verificar y examinar el estado de las agujas antes de ser utilizadas para realizar procesos quirúrgicos, y así disminuir riesgos y/o complicaciones postoperatorias.

Resumen Introduction: The degree or level of deflection of the dental needle, in most cases, can determine the success or failure of the dental anesthesia technique. Objective: Measure the degree of deflection of the dental needle, comparing 5 different brands available in the city of Hermosillo, Sonora, Mexico. Method: An experimental study was carried out, with a model created with a professional level and a carpul syringe, various punctures were made in a piece of beef, simulating the performance of a linear technique of oral anesthesia. Periapical radiographs of each of the punctures were taken, and with the help of a millimeter mesh, measurements were made. Within each group of needles, different deflection measures were presented, and an average of each brand was obtained. The range ranged from .65 mm to 2.1 mm of deflection, taking as reference a straight plane. Conclusions: It was shown that the Septodont® brand was the one that presented the lowest puncture deflection. It is advisable to verify and examine the condition of the needles before being used to perform surgical procedures, and thus reduce risks and / or postoperative complications.

A comparative analysis between atraumatic and conventional anesthetic techniques in surgical removal of upper third molars / Análise comparativa entre a técnica anestésica atraumática e convencional em cirurgia para remopao dos terceiros molares superiores

ABSTRACT Pain control is essential in dental practice, and can be accomplished through various techniques. This study seeks to compare atraumatic and conventional anesthetic techniques, applied during surgeries to remove upper third molars. The endpoints evaluated were pain indices, patient satisfaction and anesthetic efficacy. A random parallel split-mouth clinical trial was conducted with 14 patients. Group A received atraumatic anesthesia without a needle (Comfort-in®) and group B received conventional anesthesia by blocking the posterior superior alveolar nerve (PSAN) and Greater Palatine Nerve (GPN). A Visual Analogue Scale (VAS) was used to assess pain. A significantly (p<0.001) lower perception ofpain was observed among individuals who received the atraumatic technique. In 71% of cases, it was necessary to supplement the anesthesia during the procedure. Even considering the need for additional anesthesia, the Comfort-in® technique was more accepted by patients with regard to pain perception than the conventional manual technique.

RESUMO O controle da dor é fundamental na prática odontológica, po-dendo ser feito a partir de várias técnicas. Este estudo visa comparar as técnicas anestésicas atraumática e convencional, aplicadas durante cirurgias para remover terceiros molares superiores. Os pontos avaliados foram índice de dor, satisfaqao do paciente e eficácia anestésica. Um ensaio clínico randomi-zado, paralelo, boca dividida, foi conduzido com 14 participantes. O grupo A recebeu anestesia atraumática sem agulha (Comfort-in®) e o grupo B anestesia convencional por meio de bloqueio do nervo alveolar superior posterior (NASP) e nervo palatino maior (NPM). Uma Escala Visual Analógica (EVA) foi utilizada para avaliar a dor. Uma significativa (p<0,001) menor percepção de dor entre os individuos que receberam a técnica atraumática foi observada. Em 71% dos casos, fez-se necessària a complementação da anestesia durante a realiza-ção do procedimento. Mesmo considerando a necessidade de anestesia adicional, a técnica empregando o sistema Comfort-in® teve maior aceitação dos pacientes quando comparado à técnica manual convencional, no que se refere a percepção de dor, ainda que considerando a necessidade de complementação da anestesia.

Impact of Two Distinct Dental Anesthesia Simulation Models on the Perception of Learning by Students / Impacto de dos distintos modelos de simulación para anestesia dental en la percepción del aprendizaje en estudiantes

ABSTRACT We evaluated an infiltration anesthesia simulation model (IAM) and a conduction anesthesia simulation model (CAM) on the perception of learning by Mexican dental students. Our aim was to compare the perception of learning by dental students trained with two distinct dental anesthesia simulation model (DASM) with dental students who were not trained with a DASM. 3 groups participated in the study: G1 (N=12 students) learned to block the mental nerve (BMN) by participating in a theoretical lecture (stage 1) and a clinical demonstration (stage 2); G2 (N=12 students) learned the BMN by participating in the stage 1, stage 2, and training with the CAM; G3 (N=12 students) learned the BMN by participating in the stage 1, stage 2, and training with the IAM. The groups performed the BMN in a clinical exercise. Working-time of all participants was timed. Perception of learning for all participants was evaluated with a 5-point Likert Scale. The results showed that statistically significant differences were found between score of G1 and score of G2 and score of G3 (P<0.05). No statistically significant differences were found between scores of G2 and scores of G3. G1, G2 and G3 showed an average working-time of 12:42 minutes, 9.75 minutes and 8:03 minutes, respectively (P<0.05). We concluded that the IAM and CAM showed a positive impact on the perception of learning, and the students trained with the IAM showed a shorter working time compared with the students trained with the CAM.

RESUMEN En este estudio se evaluó el impacto de un modelo de simulación de anestesia dental por infiltración (IAM) y de un modelo de simulación de anestesia dental por bloqueo (CAM) en la percepción del aprendizaje en estudiantes mexicanos en estomatología. El objetivo fue comparar la percepción en el aprendizaje de estudiantes que entrenaron empleando dos distintos modelos de simulación de anestesia dental con estudiantes que no recibieron entrenamiento empleando algún modelo de simulación de anestesia dental. Participaron 3 grupos en el estudio: G1 (n=12) aprendieron el bloqueo del nervio mentoniano (BNM) al participar en una clase teórica (sesión 1) y en una demostración clínica (sesión 2); G2 (n=12) aprendieron la técnica de anestesia del BNM al participar en la sesión 1, sesión 2 y entrenando con el CAM; G3 (n=12) aprendieron la técnica del BNM al participar en la sesión 1, sesión 2 y entrenando con el IAM. Los grupos aplicaron la técnica del BNM en un ejercicio clínico. Se midió el tiempo de trabajo de los participantes. La percepción del aprendizaje de los participantes se evaluó con una Escala de Likert de 5 ítems. Los resultados mostraron diferencias estadísticamente significativas entre los valores del G2 y del G3 en comparación con el G1. No se encontraron diferencias estadísticas entre los valores del G2 y del G3. El tiempo de trabajo para el G1, G2 y G3 fue respectivamente de: 12:42 minutos, 9.75 minutos y 8:03 minutos, (P<0.05). Se concluyó que el IAM y el CAM mostraron un impacto positivo en la percepción del aprendizaje; los estudiantes entrenados con el IAM mostraron un tiempo de trabajo más corto en comparación con los estudiantes entrenados con el CAM.

Liposomal anesthetic gel for pain control during periodontal therapy in adults: a placebo-controlled RCT

Abstract Periodontal therapy usually requires local anesthesia. If effective, a non-invasive, liposomal anesthetic gel could increase the levels of acceptance of patients in relation to periodontal therapy. Objective: This study investigated the efficacy of liposomal anesthetic gel for pain control during periodontal therapy. Methodology: Forty volunteers with moderate to severe chronic periodontitis were recruited, of which at least three sextants required periodontal therapy. At least one of the selected teeth had one site with a probing depth of ≥4 mm. The volunteers received the following three gels: a placebo, lidocaine/prilocaine (Oraqix®), or a liposomal lidocaine/prilocaine, which were applied to different sextants. Pain frequency was registered during treatment and the volunteers received a digital counter to register any painful or uncomfortable experiences. At the end of each session, the volunteers indicated their pain intensity using rating scales (NRS-101 and VRS-4). The volunteers had their hemodynamic parameters measured by a non-invasive digital monitor. Results: Pain frequency/intensity did not show statistical difference between intervention groups. The tested gels did not interfere with the hemodynamic indices. Dental anxiety, suppuration and probing depth could influence pain during periodontal therapy. Conclusion: Our results suggest limited indications for the use of non-invasive anesthesia when used for scaling and root planing. Intra-pocket anesthetic gel could be a good option for anxious patients, or those who have a fear of needles.

Morphometry of the mandibular foramen applied to the local anesthetic block to inferior alveolar nerve in boars (Sus scrofa scrofa Linnaeus, 1758) / Morfometria do forame mandibular aplicada ao bloqueio anestésico local do nervo alveolar inferior de javalis (Sus scrofa scrofa Linnaeus, 1758)

Boars kept on commercial farms use their canine teeth as a mechanism of defense and attack in order to express their natural instincts, which could result in fractures of the teeth and jaws. Thus, utilizing local desensitization of the inferior alveolar nerve is crucial for executing therapeutic procedures in the oral cavities of those animals. Then, the goal is to carry out the morphometry of the mandibular foramen of that species, correlating it with the mandibular structures, while doing so in the safest manner for the animals. For that purpose, six hemimandibles of young-aged Sus scrofa scrofa were used, from which the proposed measurements were taken. On average, the lateral margin of the condylar process stood 142.43 mm away from the root of the lower medial incisive tooth. The longitudinal axis of the body of the mandible measured 22.3 mm at the level of the diastema that exists between the fourth lower premolar tooth and the first lower molar tooth. The mandibular foramen, from the caudal limit of the ventral margin, would be positioned at 26.6 mm from the ventral margin of the angle of the mandible in that level, 34.92 mm away from the medial margin of the condylar process, and 38.63 mm away from the dorsal limit from the caudal margin of the coronoid process. The lack of statistically significant differences, and observing that the osseous accident under scrutiny had been positioned in the ramus of the mandible, indicated that the proposed procedure should be performed from the introduction of the needle in an oblique and rostrodorsal direction for 2.0 cm, and angulated at 60º with the anatomic reference created by the medial demarcation obtained via the support of the thumb on the lateral margin of the ramus of the mandible, ventrally to the zygomatic arch, all while preserving neighboring structures and establishing an unheard-of anesthetic methodology for boars.(AU)

Javalis mantidos em criatórios comerciais utilizam os dentes caninos como mecanismo de defesa e ataque a fim de expressar seus instintos naturais, o que pode resultar em fraturas dentárias e da mandíbula propriamente dita. Desta forma, propiciar a dessensibilização local do nervo alveolar inferior é essencial para a execução de procedimentos terapêuticos na cavidade oral destes animais. Logo, objetivou-se realizar a morfometria do forame mandibular desta espécie a fim de correlacioná-lo com as estruturas mandibulares, inferindo, também, sobre a forma mais segura de realização da referida técnica nos espécimes. Para tanto, foram utilizadas seis hemimandíbulas de Sus scrofa scrofa jovens, a partir das quais foram realizadas as mensurações propostas. Em média, a margem lateral do processo condilar distanciou-se 142,43 mm da raiz do dente incisivo medial inferior; o eixo longitudinal do corpo da mandíbula mediu 22,3 mm ao nível do diastema existente entre o quarto dente pré-molar e o primeiro dente molar inferiores; e o forame mandibular, a partir do extremo caudal de sua margem ventral, posicionou-se a 26,6 mm da margem ventral do ângulo da mandíbula neste nível, 34,92 mm da margem medial do processo condilar, e 38,63 mm do extremo dorsal da margem caudal do processo coronóide. Na falta de diferenças estatisticamente significantes, e observando que o acidente ósseo estudado posicionou-se no ramo da mandíbula, indica que o procedimento proposto deva ser realizado a partir da introdução da agulha em sentido oblíquo rostroventral por 2,0 cm e angulada a 60º com o referencial anatômico criado pela delimitação medial obtida pelo apoio do dedo polegar na margem lateral do ramo da mandíbula, ventralmente ao arco zigomático, preservando as estruturas próximas e definindo-se uma metodologia anestésica inédita para os Javalis.(AU)

Investigation of postoperative complications in children after dental therapy under general anesthesia / 华西口腔医学杂志

OBJECTIVE@#This study aimed to evaluate the postoperative complications undergoing dental general anesthesia in children and analyze the prevalence and related factors.@*METHODS@#This prospective study involved 292 systematically healthy children (36 to 71 months old) who received extensive dental treatment under general anesthesia. Data about patients' histories, characteristics, dental and anesthesia procedure were collected. Parents or caregivers were interviewed face to face preoperation and 72 h postoperation. Data were analyzed using logistic regression.@*RESULTS@#Approximately 93.5% of the enrolled children reported one or more complications. The most prevalent complication was postoperative pain, followed by weariness, agitation, problem in eating, drowsiness, oral bleeding, cough, fever, etc. The length of operative time and femininity were the risks of the postoperative pain. Nutrition status was the factor probably in association with fever.@*CONCLUSIONS@#The children receive longer operative time and girls show to be more susceptible to the postoperative pain. High nutrition status could be the protective factor of postoperative fever.