Elevación de seno conBetafosfato Tricálcico yposterior colocación deimplantes. A propósito deun caso / Sinus lift with tricalcium beta-phosphate and subsequent implant placement. Case report

La extracción o pérdida dental supone la remodelación del alveolo y una pérdida progresiva del hueso alveolar residual. Esta disminución en altura, debido a la presencia delseno maxilar en el sector posterosuperior, puede comprometer la disponibilidad ósea adecuada para la colocación de implantes. Como solución a esto, surge la técnica de elevación de seno. En esta técnica, se emplean diversos materiales de injerto, entre los que se encuentran el betafosfatotricálcico (b-TCP). Este material presenta propiedades osteoconductivas y osteoinductivas. Además, se reabsorbe más fácil que otros sustitutos óseos y es fácilmente reemplazado por nuevo hueso. Se ha comparado su comportamiento clínico con otros materiales de injerto, sin encontrar diferencias significativas. Además, a 10 años, los implantes colocados en elevaciones de seno realizadas con b-TCP han mostrado altas tasas de supervivencia. Caso clínico. Se presenta el caso clínico de una paciente, mujer de 52 años de edad, sin antecedentes médicos de interés. Acude a consulta por dolor en el 26. Tras la exploración diagnóstica radiológica e intrabucal se aconsejó a la paciente la extracción del 26. Ocho meses después, y realizando un estudio con CBCT se informó a la paciente sobre la posibilidad de rehabilitación con implantes, previa cirugía de elevación sinusal. Se realizó la elevación sinusal con b-TCP como material de injerto. Pasados tres meses, se procedió a la colocación de tres implantes, adquiriendo estos una buena estabilidad primaria Discusión y conclusiones. Se utilizan diversos materiales de injerto en la técnica de elevación sinusal, injertos de hueso autólogo, xenoinjertos e injerto aloplásticos. Se ha comparado el comportamiento clínico del b-TCP con otros materiales de injerto sin mostrar diferencias significativas. Por otro lado, se ha estudiado un periodo de espera menor a 6 (AU)

Tooth extraction or loss involves alveolar remodelling and progressive loss of residual alveolar bone. This reduction in height, due to the presence of the maxillary sinus in the posterosuperior sector, can compromise adequate bone availability for implant placement. The sinus lift technique has emerged as a solution to this problem. In this technique, various grafting materials are used, including beta-phosphatidic acid (b-TCP). This material has osteoconductive and osteoinductive properties. In addition, it is more easily resorbed than other bone substitutes and is easily replaced by new bone. Its clinical behaviour has been compared with other graft materials, without finding significant differences. In addition, at 10 years, implants placed in sinus lifts performed with b-TCP have shown high survival rates. Clinical case: The clinical case of a 52-year-old female patient with no medical history of interest is presented. She went for consultation due to pain in tooth 26. Following the radiological and intraoral diagnostic examination, the patient was advised to have tooth 26 extracted. Eight months later, and after a CBCT study, the patient was informed about the possibility of rehabilitation with implants, following sinus lift surgery. The sinus lift was performed with b-TCP as graft material. After three months, three implants were placed, acquiring a good primary stability. Discussion and conclusions: different graft materials are used in the sinus lift technique, autologous bone grafts, xenografts and alloplastic grafts. The clinical performance of b-TCP has been compared with no significant differences found. Furthermore, a waiting period of less than 6 months has been studied for the placement of implants. These implants showed high primary stability and survival rates of 99-100%. Therefore, b-TCP is a safe material for sinus lifts and allows the placement of implants in a healing time of less than 6 months (AU)

Encuesta sobre las creencias de los implantes dentales en función de: salud bucodental, nivel educativo e ingresos económicos en un grupo de población / Survey on beliefs relating to dental implants according to: oral health, educational level and income in a population group

Introducción: En los comienzos de siglo, el asentamiento de cadenas dentales en el escenario de la odontología española produjo un aperturismo en el acceso al tratamiento implantológico, considerado hasta entonces como producto de lujo limitado por la capacidad económica del paciente. La financiación atrajo a cantidad de usuarios, creando una gran oferta que fomentó la aparición de publicidad dental invasiva que influye sobre las creencias y percepción de los pacientes para tomar decisiones. Se planteó como objetivo estudiar la influencia del nivel de ingresos, educación y salud bucodental en las creencias de la población en relación con los implantes dentales. Métodos: Sobre una encuesta de 48 preguntas a través de Google Formularios, abierta de marzo a junio de 2021, se tuvo acceso a un total de 535 usuarios no vinculados al sector odontoestomatológico. Los datos fueron secundariamente analizados mediante un análisis descriptivo. Resultados: El nivel de educación de los progenitores de los encuestados resultó ser más influyente en la salud bucodental de los encuestados que el nivel de ingresos o de educación de los propios encuestados. El nivel de ingresos no resultó influyente en relación con la elección del tipo de clínica dental, profesional o precio de los implantes, sino el nivel educativo intergeneracional. Conclusiones: El nivel educativo de los progenitores de los encuestados es el factor que más influyó en la muestra de este estudio, tanto en la salud bucodental, como en la toma de decisiones relacionadas con la implantología (AU)

Introduction: At the turn of the century, the establishment of dental chains on the Spanish dentistry scenario led to an opening up of access to implant treatments, which until then had been considered a luxury product limited by the patient’s financial capacity. Financing attracted a large number of users, creating a large supply that fostered the emergence of invasive dental advertising that influences patients’ beliefs and perceptions for decision making. The aim was to study the influence of income level, education and oral health on the beliefs of the population in relation to dental implants. Methods: A 48-question survey via Google Forms, opened from March to June 2021, provided access to a total of 535 users not linked to the dentistry sector. The data were secondarily analysed using an Excel spreadsheet. Results: The education level of the respondents’ parents was found to be more influential on the respondents’ oral health than the level of income or education of the respondents themselves. The level of income was not influential in relation to the choice of the type of dental clinic, professional or price of the implants, but rather the intergenerational educational level. Conclusions: The educational level of the respondents’ parents is the most influential factor in the sample of this study, both in terms of oral health and in decision-making related to implant dentistry (AU)

Clinical performance of tooth root blocks for alveolar ridge reconstruction.

This systematic literature review set out to investigate the clinical outcomes of autogenous tooth root blocks used for ridge augmentation: survival rates, block resorption, implant survival, post-surgical complications, and histology findings. This review followed PRISMA guidelines. An automated search was made in four databases, supplemented by a manual search for relevant articles published before December 2020. The quality of evidence provided was assessed with the Newcastle-Ottawa Quality Assessment Scale and the Joanna Briggs Institute Critical Appraisal tool. Seven articles fulfilled the inclusion criteria and underwent analysis. The articles included a total of 136 patients, who received 118 autogenous tooth root blocks and 26 autogenous bone blocks showing block survival rates of 99.15% and 100%, respectively. Tooth root blocks presented a mean bone gain that was similar to autologous bone blocks but showed less resorption. The implant survival rate was 98.32% for autogenous tooth root blocks. Reconstruction of alveolar crests by means of autogenous tooth root blocks appears to be a satisfactory option for single-tooth gaps and low grades of bone atrophy in terms of the survival of the bone block and the implants placed subsequently. More research providing long-term data is needed to confirm these findings.

Dental implant placement through impacted teeth or residual roots as an alternative to invasive extraction surgeries: a systematic literature review.

This work systematically reviews dental implant placement through impacted teeth or residual roots, as an alternative to invasive extraction surgeries, evaluated in terms of survival rates, marginal bone loss, surgical, and prosthetic complications. The authors conducted an electronic search of four databases up to September 2020; also a complementary handsearch was carried out. The quality of the included studies was assessed using a protocol for assessment of risk of bias in exposure studies. Ten studies fulfilled the inclusion criteria and were analysed. A total of 44 patients received 62 dental implants and were monitored for a minimum of 12-months follow-up. An overall mean implant survival rate was 90.32%, reporting 97.56 % for dental implants through impacted teeth and 76.19% through residual roots. No surgical or prosthetic complications were reported. Placing dental implants through impacted teeth may offer a valid therapeutic option for implant-supported restorations in patients for whom surgery and orthodontic traction are not possible, and/or patients who refuse to undergo more invasive extraction surgery. Moreover, additional caution is recommended when placing implants through retained root fragments, as this may involve long-term risk. Further research generating long-term data are needed to confirm these findings.

Complications associated with inferior alveolar nerve reposition technique for simultaneous implant-based rehabilitation of atrophic mandibles. A systematic literature review.

INTRODUCTION: Surgical inferior alveolar nerve (IAN) reposition techniques offer an alternative approach to implant-based rehabilitation in patients with severe mandibular atrophy The aim of this systematic review, was to determine the complications associated with the technique and to determine which of two variants (lateralization or transposition) is less invasive. MATERIALS AND METHODS: An electronic search was conducted in databases complimented by a manual search to identify clinical studies investigating complications derived from these surgical techniques. Only studies of adult humans, published in English during the last seven years were included. The initial search located 78 articles, of which seven were included in analysis on the basis of the following characteristics: four investigated inferior alveolar nerve lateralization (IANL), one inferior alveolar nerve transposition (IANT), and two investigated both reposition techniques. RESULTS: This review included data from 289 patients who were recruited for lateralization (N=319) or transposition surgery (N=33) making a total of 352 reposition procedures. Five patients (1.73%) suffered persistent damage to the IAN at the end of the follow-up periods. The overall implant survival rate was 99.26% of a total of 817 implants. The most common complications were neurosensory problems, mandibular fracture, infection, implant loss, and insufficient anatomical reconstruction of the atrophic mandible; neurosensory complications (hypoesthesia, paraesthesia, and hyperesthesia caused by traumatic damage to the nerve) were the most prevalent. CONCLUSIONS: Lateralization of the inferior alveolar nerve would appear to be less invasive as it produces lower percentages of persistent neurosensory disorders (1.56%) than transposition (12.12%). Nevertheless, both techniques offer a viable approach to implant placement in edentulous atrophic mandibles, obtaining predictable clinical and radiological results after 5 years implant loading.

Clinical repercussions and epidemiological considerations of supernumerary canines: A 26 case series.

BACKGROUND: To establish the prevalence of supernumerary canines (SNC) in a sector of the population of Madrid (Spain), as well possible complications associated with this unusual developmental variation. STUDY DESIGN: This observational study was performed between 2005 and 2017, among 21,615 patients seeking dental treatment at the Faculty of Dentistry, Complutense University of Madrid (Spain), and at the Virgen de la Paloma Hospital, Madrid (Spain); 22 patients with 26 SNCs were diagnosed. These 22 patients underwent clinical and radiological exploration, registering patient data. RESULTS: SNCs presented a prevalence of 0.10% of the study population. The supernumerary teeth (SNT) were located in the upper maxilla more frequently (61.54%) than the mandible (38.46%). 69.23% were found to be impacted, also causing the impaction of the permanent canine in 53.85% of these cases. In 15.38%, follicular expansion > 3mm was observed. SNCs were associated with other SNT in only four patients. CONCLUSIONS: Despite of the fact that the SNCs are usually diagnosed casually in the course of radiological exploration, in the present study over half of them (53.85%) caused impaction of the permanent canine. Early diagnosis allows optimal patient management and treatment planning, with intervention at an appropriate time to prevent complications in development and so reduce later treatment need.

Use of autologous tooth-derived graft material in the post-extraction dental socket. Pilot study.

BACKGROUND: The objectives of the present pilot study are to compare via CBCT the alveolar contraction suffered both vertically and horizontally between the control group and the group using autologous dental material (ADM), as well as to study the densitometric differences between both post-extraction sockets. MATERIAL AND METHODS: A split-mouth study was performed in n = 9 patients who required two extraction of single-rooted teeth deemed suitable for deferred rehabilitation with osseointegrated implants. Two groups were formed - a control group, in which the post-extraction socket was not filled, and an ADM group, in which the alveolar defect was filled with freshly processed autogenous dental material. Both dimensional and densitometric analyses of the alveoli were performed in both groups immediately after surgery (baseline), as well as 8 weeks and 16 weeks later. RESULTS: The mean height of alveolar bone loss was: VL (Control 1.77 mm, loss of 16.87% of initial alveolar height; ADM 0.42 mm, loss of 4.2% of initial alveolar height), HL-BCB (Control 2.22 mm, ADM 0.16 mm, p= 0.067 at 16 weeks). The mean bone loss of the vestibular width (VL-BCB) was much higher in the control group (1.91 mm at 1 mm, 1.3 mm at 3 mm, and 0.89 mm at 5 mm) than in the ADM group (0.46 mm at 1 mm, 0.21 mm at 3 mm, 0.01 at 5 mm, p=0.098 at 16 weeks). At 16 weeks, densitometric analysis of the coronal alveolar area revealed a bone density of 564.35 ± 288.73 HU in the control group and 922.68 ± 250.82 HU in the ADM group (p=0.045 ). CONCLUSIONS: In light of these preliminary results, autologous dentine may be considered a promising material for use in socket preservation techniques.

Implant stability using piezoelectric bone surgery compared with conventional drilling: a systematic review and meta-analysis.

The aim of this systematic review was to assess the primary and secondary stability of dental implants placed at sites prepared with piezoelectric bone surgery (PBS) and conventional drilling (CD). The PubMed/MEDLINE and Cochrane Library databases were searched without date or language restriction up to June 2017. Controlled clinical trials in which each patient received implants placed at sites prepared with both PBS and CD were selected. Implant stability had to be measured on day 0 and during the osseointegration period. Methodological quality was assessed using the Cochrane Collaboration tool. A meta-analysis was performed to compare primary stability (on day 0) and secondary stability (after 2 and 3months) between the two groups. The studies included were determined to have a high risk of bias. There was no significant difference between the two groups for primary stability (on day 0) (P=0.51). After 2 and 3months, secondary stability was statistically higher in implants placed with PBS preparation (P=0.04 and P=0.01, respectively). The implant survival rate was 97.5% in the CD group and 100% in the PBS group. PBS preparation improves secondary stability after 2 and 3months in comparison to CD, with similar implant survival rates. Further studies are needed to determine whether implant osseointegration periods could be shortened with PBS preparation.

Masseter and temporalis muscle electromyography findings after lower third molar extraction.

BACKGROUND: The main clinical application of electromyography is to detect abnormalities in muscle function, to assess muscle activity for purposes of recruitment, and in the biomechanics of movement. OBJECTIVES: To analyze electromyography (EMG) findings for masticatory muscles during chewing following surgical extraction of lower third molars, and to determine any correlation between pain, inflammation, trismus, and the EMG data registered. MATERIAL AND METHODS: This prospective study included 31 patients. Surface EMG was used to study masseter and temporalis muscle function before lower third molar extraction and 72 hours and seven days after surgery. Clinical variables, pain, inflammation, and trismus were registered before and after surgery. RESULTS: Studying the area and size of the masticatory muscles, higher values were found for temporalis than masseter muscles, regardless of the surgical side, which points to the greater involvement of the temporalis muscle in mastication. Comparing the side where surgery had been performed with the non-surgical side, a sharp and statistically significant reduction in amplitude and area were noted on the surgical side reflecting major functional affectation. One week after surgery, amplitude and area had almost returned to base-line values, indicating almost complete recovery. While pain decreased progressively after surgery, inflammation peaked at 72 hours, while mouth opening reached a minimum at this time, returning to normality within the week. CONCLUSIONS: Surgical extraction of lower third molars produces changes to electromyography activity that are more evident during the first hours after surgery and closely related to the intensity of pain suffered and the patient's inflammatory responses, although they are not related to mouth opening capacity.

Unicystic Ameloblastoma: Rehabilitation with Chin Graft Harvested and Implant-Supported Fixed Prosthesis.

OBJECTIVE: The objective is to present a clinical case of a 38-year-old male with a maxillary unicystic ameloblastoma treated by means of tumor block resection followed by chin-harvested graft placement in order to place two dental implants for esthetic and functional rehabilitation. METHODS: Ameloblastoma is a benign odontogenic tumor characterized by local aggression and a high rate of recurrence; the latter partly depends on how it is treated. Complete resection of the tumor, which usually prevents recurrence, produces bone defects of varying size that must be reconstructed later on. In most cases this is done using bone grafts and implant-supported prostheses. Grafts harvested from the chin are relatively easy to obtain and enjoy a fairly uneventful post-operative with few complications; they are suitable for cases in which the defect generated by resection is of small size. RESULTS: Functional and esthetic rehabilitation and the tumor has not relapsed during a 7-year follow-up. CONCLUSION: Tumor block resection followed by chin-harvested graft placement and dental implants is a safe treatment for patients with unicystic ameloblastoma.

Implant survival and complications in cases of inferior alveolar nerve lateralization and atrophied mandibles with 5-year follow-up.

The objectives of this study were to evaluate the survival after 5 years of implants placed using inferior alveolar nerve (IAN) lateralization in cases of mandibular atrophy and to determine the incidence of complications. Twenty-seven patients received 74 implants by means of the IAN lateralization technique. Implant survival after 5 years of loading was 98.6%. Eighteen months after surgery, the recovery of sensitivity was complete in 26 cases. Implant placement with IAN lateralization was seen to be a satisfactory and predictable technique. IAN lateralization requires a high level of technical skill, and strict criteria should be applied when prescribing this treatment.

Efficacy of platelet-rich plasma applied to post-extraction retained lower third molar alveoli. A systematic review.

UNLABELLED: Dental retentions have a high prevalence among the general population and their removal can involve multiple complications. The use of platelet rich plasma has been proposed in an attempt to avoid these complications, as it contains high growth factors and stimulates diverse biological functions that facilitate the healing of soft and hard tissues. OBJECTIVES: To evaluate the available scientific evidence related to the application of platelet-rich plasma in the post-extraction alveoli of a retained lower third molars. MATERIAL AND METHODS: A systematic review of published literature registered in the Medline, EMBASE, Cochrane and NIH databases. The following categories were included: human randomized clinical studies. Key search words were: platelet rich plasma; platelet rich plasma and oral surgery; platelet rich in growth factors and third molar. RESULTS: Of 101 potentially valid articles, seven were selected, of which four were rejected as they failed to meet quality criteria. Three studies fulfilled all selection and quality criteria: Ogundipe et al.; Rutkowski et al.; Haraji et al. The studies all measured osteoblast activity by means of sintigraphy, and also registered pain, bleeding, inflammation, temperature, numbness as perceived by the patients, radiological bone density and the incidence of alveolar osteitis. CONCLUSIONS: Scientific evidence for the use of PRP in retained third molar surgery is poor. For this reason randomized clinical trials are needed before recommendations for the clinical application of PRP can be made.

Fibroma ameloblástico. A propósito de un caso / Ameloblastic fibroma. A case report

El fibroma ameloblástico es un tumor benigno mixto. Se trata de una lesión poco frecuente que afecta a pacientes jóvenes y se localiza con mayor frecuencia en la zona molar mandibular, pudiendo bloquear la erupción de algún diente permanente. Se presenta el caso de un niño de 15 años de edad, sin antecedentes médicos ni odontológicos de interés, que acudió al servicio de cirugía remitido por su ortodoncista (..) (AU)

The ameloblastic fibroma is a mixed benign tumor. It is an unusual injury that often affects young patients and it is frequently located in the mandible molar region and it could block the eruption of any permanent tooth. A fifteen years old child with nomedical history or dentistry interest arrived at the emergency department. He was referred by the orthodontist for the extraction of the lower left wisdom tooth germ and value second lower left molar which is impacted. Clinical intraoral examination revealed the absence of the second lower left molar with no inflammation in the area. Radiographic examination confirmed a multilobulated radiolucent area surrounded by (..) (AU)

Estudio exploratorio del impacto de las creencias nucleares relacionadas con la adicción en el consumo tras la abstinencia / Exploratory study of the impact of core addiction beliefs on drug consumption during abstinence

Objetivo. El objetivo de este estudio fue conocer si existen diferencias en el grado con el que se identifican los pacientes que se encuentran abstinentes con determinadas creencias inmediatamente antes de que se produzca un episodio de consumo y días posteriores al mismo. Material y método. La muestra la componen 29 personas que presentan dependencia a la cocaína o al alcohol, en el que el 75,9 % de ellos son hombres y el 24,1 % mujeres. Todos ellos siguen tratamiento ambulatorio desde hace al menos dos meses. Se les pidió a los pacientes que contestaran al cuestionario de modo que permitiera llevar a cabo una estrategia para la detección y desarticulación de creencias que influyen, según estos resultados, en la decisión de consumir nuevamente cuando se está abstinente. Resultados. Los resultados muestran que existen diferencias entre en el grado con el que los pacientes se identifican con las creencias evaluadas antes y después del consumo, destacando el impacto tanto de las creencias relacionadas con la adicción como las relacionadas con la renuncia al consumo sobre el deseo de consumir. Conclusiones. Se concluye que la presencia de creencias nucleares relacionada con el consumo de drogas predispone al consumo, destacando particularmente aquellas que guardan relación con la decisión de cese definitivo del consumo de drogas porque no suelen verbalizarse fácilmente a lo largo de la terapia (AU)

Objetive. The aim of this study was to determine whether there are differences in the degree to which substance abusing patients identify themselves with core addiction beliefs immediately before a consumption episode (retrospectively assessed) vs. some days afterwards. Material and method. The sample was composed by 29 individuals diagnosed with alcohol or cocaine dependence (75.9 % males and 24.1 % females) that were following outpatient treatment for at least two months. We asked the patients to answer the questionnaire in a way that allowed them to implement a strategy to detect and inoculate these core beliefs that negatively impact abstinence maintenance. Results. Showed signifi cant differences in the degree to which patients identify themselves with beliefs before vs. after the consumption episode. These results were signifi cant both in regards to beliefs associated with addiction and to beliefs associated with the decision to give-up consumption. Conclusion. We conclude that the existence of core addiction beliefs may predispose to consumption, with particular relevance of the beliefs associated with the decision to give-up consumption, since they are not easily verbalized thru therapy (AU)

Hiperplasia de la apófisiscoronoides / Hyperplasia of the coronoid apophyses

La hiperplasia coronoidea es una rara alteración que se caracteriza por el desarrollo exagerado de la apófisis coronoides, de carácter progresivo, tanto en altura como en volumen, durante períodos de meses a años. Objetivos: Determinar los diferentes aspectos epidemiológicos de la hiperplasia de la apófisis coronoides, analizar los signos más característicos, evaluar los tratamientos realizados y valorar la apertura bucal pretratamiento y postratamiento. Diseño del estudio: Revisión bibliográfica sobre casos diagnosticados de hiperplasia de la apófisis coronoides, analizando un total de 27 artículos que han proporcionado un total de 85 casos. Resultados: La hiperplasia de la apófisis coronoides presentó una mayor incidencia en hombres respecto a las mujeres con una ratio 1.5:1, siendo la edad media de diagnóstico de 25.5 años. Los signos característicos de diagnóstico son la limitación de la apertura bucal con un 100% de los casos, seguido de la asimetría facial. La actitud terapéutica llevada a cabo fue de cirugía seguida de la fisioterapia. Con respecto a la apertura bucal es de 18.5 mm en pretratamiento y 33.1 mm postratamiento. Conclusiones: La hiperplasia de la apófisis coronoides es una entidad poco frecuente que afecta más a varones entre la 2ª y 3ªdécada de la vida. El signo característico es la limitación de la apertura bucal, que se diagnostica con la ortopantomografía, y el tratamiento más utilizado es la coronoidectomía seguida de la fisioterapia (AU)

Coronoid hyperplasia is a rare disorder that is characterized by the exaggerated development of the coronoid apophysis, having a progressive nature in both height and volume, during periods of months to years. Objectives: Determine the different epidemiological aspects of hyperplasia of the coronoid apophysis, analyze the most characteristics signs, evaluate the treatments conducted and assess the pre-treatment and post-treatment buccal opening. Study design: Bibliographic review of diagnosed cases of hyperplasia of the coronoid apophyses, analyzing a total of 27 articles that provided a total of 85 cases. Results: The hyperplasia of the coronoid apophysis presented a greater incidence in men than women with a ratio of 1.5:1, with the average age of diagnosis being 25.5 years of age. The characteristic diagnostic signs are the limitation of the buccal opening in 100% of the cases, followed by facial asymmetry. The therapeutic approach carried out was surgery followed by physiotherapy. With respect to the buccal opening, it was 18.5 mm pre-treatment and 33.1 mm post-treatment. Conclusions: Hyperplasia of the coronoid apophysis is a rare disorder that affects more men in the second and third decade of life. The characteristic sign is the limitation of the buccal opening, which is diagnosed with orthopantomography and the treatment most used is the coronoidectomy, followed by physiotherapy (AU)

Evaluation of the anaesthetic properties and tolerance of 1:100,000 articaine versus 1:100,000 lidocaine. A comparative study in surgery of the lower third molar.

OBJECTIVES: To evaluate the anaesthetic properties and tolerance of articaine versus lidocaine at equal vasoconstrictor concentration. STUDY DESIGN: A total of 96 male and female patients who underwent surgical treatment of the lower third molar participated. Patients were randomly assigned to articaine hydrochloride with epinephrine 1:100,000 and lidocaine hydrochloride with epinephrine 1:100,000. The variables analysed were latency period, duration of anaesthetic effect, tolerance and adverse reactions. RESULTS: Both the latency period and the duration of anaesthetic effect were greater for articaine, although the differences were not statistically significant. Latency: mean difference of 2.70 ± 2.12 minutes (95%CI of -1.51 minutes - 6.92 minutes). DURATION: mean difference of -33 minutes 5 seconds ± 31 minutes (95% CI -1 hour 35 minutes - 29 minutes). There were 4 adverse events that did not require the patients to be withdrawn from the study. CONCLUSIONS: The anaesthetics in this study have very similar properties for use in surgery and have demonstrated a good safety and tolerability profile.

Preliminary study for the validation of the Spanish version of the Personality Belief Questionnaire

Introduction. Dysfunctional beliefs are defined as cognitive schemas that drive an abnormal perception and interpretation of reality, being present in all personality disorders. Beck and Beck developed the Personality Belief Questionnaire (PBQ) in order to measure the degree to which individuals endorse basic beliefs associated with personality disorders, providing unique information about the intensity of the dysfunctional beliefs that must be addressed during treatment. Objective. The aims of this study are, first, to develop a Spanish version of the PBQ and to evaluate its psychometric properties in a sample from the normal population, and second, to examine if PBQ's indexed intensity of dysfunctional beliefs may discriminate between subgroups of individuals within the extreme tails of their corresponding personality traits (measured by a gold standard, the MCMI-III). Methods. We administered the PBQ and the MCMI-III to a sample of 63 undergraduate students of Spanish nationality. Results. Results showed that the Spanish adaptation of the PBQ have sound psychometric properties. Furthermore, we showed that there is a good fit between the personality traits measured with the gold standard and the intensity of dysfunctional beliefs measured with the PBQ, since this questionnaire was able to discriminate between individuals with high vs. low levels of the corresponding personality traits. Conclusions. We conclude that the Spanish adaptation of the PBQ presents adequate psychometric properties (in terms of reliability and construct validity) and holds an important potential for application to clinical populations, in which it may assist the treatment process (AU)

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Epidemiology and treatment of adenoid cystic carcinoma of the minorsalivary glands: A meta-analytic study

Objectives: To evaluate the epidemiological aspects of adenoid cystic carcinoma (ACC) and to evaluate the differenttherapeutic possibilities as well as the percentage of survival.Study Design: A retrospective, meta-analytic, observational study was carried out by selecting a total of 13 articles,which provided a sample size of 263 cases of patients who had been diagnosed with ACC in the minorsalivary glands.Results: ACC was found to be more common among women (56.5%) and the average age at diagnosis was 55.26years old. The primary location of the tumor was in the palate in 57% of the cases, the predominant pattern beingcribiform. The treatment of choice was therapy combined with surgery and radiotherapy in 62.7% of the subjects.The overall survival rate was 70.76% and 56.76%, at 5 and 10 years respectively.Conclusions: Early detection of adenoid cystic carcinoma is necessary in order to enable making an earlier prognosis and thus enable a better quality of life for the patient (AU)

Immediate post-extraction implants subject to immediate loading: a meta-analytic study.

UNLABELLED: Since Brånemark first started developing its implant system, there has been a continuous and significant evolution in oral implantology through experimental and clinical research, and many of the concepts that were once considered valid have now become the subject of debate. The insertion of the implant immediately after extraction of the tooth to be substituted has now become the implant treatment of choice and is associated with preserving the bone structure and the gingival architecture, as well as with reducing the treatment time, which ultimately benefits the patient. OBJECTIVE: To evaluate the success rate of the immediate post-extraction implants (IPI) subject to immediate loading. STUDY DESIGN: A meta-analytic study was carried out on 659 immediate post-extraction implants obtained from a bibliographic review of 25 articles published within the last 9 years. RESULTS: We obtained a sample of 322 patients who had been treated with a total of 659 implants placed immediately following extraction. The mean age of the patients was 51 years old. A total of 441 implants were inserted in the maxilla, 152 in the mandible and 64 were placed in an unspecified location. The survival rate ranged between 85% and 100%. CONCLUSIONS: Immediate post-extraction implant treatment is an implant alternative with a survival rate similar to that of the conventional technique for implant placement and enables preserving both the bone structure and gingival architecture, as well as providing immediate functional loading, thus improving the quality of the treatment as far as the patient is concerned.