Clinical application of a digital positioning guide template during the extraction of maxillary wholly impacted supernumerary teeth / 口腔疾病防治

Objective@#To evaluate the clinical efficacy of positioning guide templates for maxillary wholly impacted supernumerary teeth to provide technological solutions for clinical applications. @*Methods @#After approval by the hospital ethics committee and informed consent given by the patients. Data from 136 patients with maxillary wholly impacted supernumerary teeth from January 2016 to April 2022 were analyzed retrospectively. The patients were divided into two groups according to the usage of the positioning guide template. The experimental group included patients using the positioning guide template (71 cases), and the control group did not use the positioning guide template (65 cases). The operation time and complications were statistically analyzed to evaluate the clinical efficacy after surgery. @*Results @# All operations were successfully completed. The average operation time in the experimental group was (21.5 ± 3.4) min, significantly shorter than that in the control group (27.2 ± 4.9) min. There were statistically significant differences between the experimental and control groups (t = 7.599, P<0.001). One week after the operation, there were no complications in the experimental group, and there were 2 cases of adjacent tooth injury and 3 cases of gingival numbness in the control group.@* Conclusion @# A digital positioning guide template can effectively shorten the time of maxillary wholly impacted supernumerary teeth extraction and is an effective means to assist clinical maxillary wholly impacted supernumerary teeth extraction.

Prevalence and Patterns of Supernumerary Teeth in a Peruvian Non-Syndromic Population: A Radiographic Study

ABSTRACT: This study aims to evaluate the prevalence and patterns of supernumerary teeth in a Peruvian non- syndromic population. This retrospective study used 2500 panoramic radiographs from the archives of a radiology center from Tacna-Peru. Radiographs were taken in 2019 and corresponded to subjects with ages between 8 to 22 years. The patterns of the supernumerary teeth were recorded in a checklist. Descriptive statistics was used for the distribution of supernumerary teeth. The Chi-square test was used to compare the distribution between the patterns. A confidence level of 5 % was used. The prevalence of supernumerary teeth was 5.32 % (n=133), with a male: female ratio of 1.56:1. The most affected arch was the maxilla (79.7 %), single presentation was the most common (87.22 %), and no differences were observed by gender (p > 0.05). Mesiodens was the most frequent (53.38 %), followed by parapremolar (34.59 %) in both genders (p > 0.05). According to the morphology, conical presentation was presented in 46.62 % of the cases, and impacted status were seen in 69.92 %. There were significance differences when the distribution of morphology was compared by the affected arch (p < 0.05). Conical form was most common in the maxilla (53.77 %), meanwhile in the mandible was the euromorphic type (40.74 %). A prevalence of supernumerary teeth of 5.32 % was estimated. The most frequent affected arch was the maxilla. Mesiodens, conical type and impacted were the most frequent patterns.

RESUMEN: Los dientes supernumerarios son anomalías del desarrollo dentario y se pueden clasificar según diferentes patrones. Este estudio tiene como objetivo evaluar la prevalencia y patrones de dientes supernumerarios en una población peruana no sindrómica. Este estudio retrospectivo utilizó 2500 radiografías panorámicas de los archivos de un centro de radiología de Tacna-Perú. Las radiografías se tomaron en 2019 y correspondieron a sujetos con edades entre 8 y 22 años. Los patrones de los dientes supernumerarios se registraron en una lista de verificación. Se utilizó estadística descriptiva para describir la distribución de dientes supernumerarios. Se utilizó la prueba de Chi-cuadrado para comparar la distribución entre los patrones. Se utilizó un nivel de confianza del 5 %. La prevalencia de dientes supernumerarios fue de 5,32 % (n = 133), con una relación hombre: mujer de 1,56:1. El arco más afectado fue el maxilar (79,7 %), la presentación única fue la más común (87,22 %) y no se observaron diferencias por sexo (p > 0,05). Mesiodens fue el más frecuente (53,38 %), seguido del parapremolar (34,59 %) en ambos sexos (p > 0,05). Según la morfología, la presentación cónica se presentó en el 46,62 % de los casos y el estado impactado en el 69,92 %. Hubo diferencias significativas cuando se comparó la distribución de la morfología por arco afectado (p < 0,05). La forma cónica fue más común en el maxilar (53,77 %), mientras que en la mandíbula fue el tipo euromórfico (40,74 %). Se estimó una prevalencia de dientes supernumerarios de 5,32 %. El arco afectado con mayor frecuencia fue el maxilar. Los mesiodens, tipo cónico e impactado fueron los patrones más frecuentes.

Tratamento de dentes inclusos em proximidade a cavidade nasal e seio maxilar: relato de caso / Treatment of teeth included with proximity to the nasal cavity and maxillary sinus: case report

Durante a formação dentária, distúrbios de desenvolvimento podem acontecer, causando anomalias de número, forma, tamanho, estrutura e posição, além de apresentarem anormalidade no padrão sequencial de irrupção. Uma boa anamnese, associada a palpação e exames de imagens são indispensáveis para um diagnóstico precoce e favorável destas alterações. Os exames de imagem determinarão a relação espacial destes dentes com as estruturas nobres adjacentes. O objetivo deste trabalho é relatar a presença de supranumerário unilateral e impactação bilateral de caninos permanentes, ambas anomalias com proximidade da cavidade nasal e seio maxilar, ressaltando a importância do diagnóstico preciso através de exames clínico e de imagens, que direcionam o planejamento terapêutico específico para cada caso, bem como a associação multidisciplinar para obtenção de um resultado satisfatório do quadro e melhora da qualidade de vida do paciente(AU)

During dental formation, developmental disorders can occur, causing anomalies of number, shape, size and position, in addition to presenting abnormality in the sequential pattern of irruption. Anamnesis associated with palpation are indispensable for an early diagnosis of these alterations. Imaging exams will determine the spatial relationship between these teeth and the adjacent noble structures. The aim of this study was to report the presence of unilateral supernumerary and bilaterally impacted canines, both anomalies with proximity of nasal cavity and maxillary sinus, emphasizing the importance of accurate diagnosis through clinical and imaging exams, that direct the specific therapeutic planning for each case, as well as the multidisciplinary association to obtain satisfactory results and improve the life quality of patients(AU)

Múltiples dientes supernumerarios en un paciente pediátrico no sindrómico: Una condición rara / Multiple supernumerary teeth in a non-syndromic pediatric patient: A rare condition

RESUMEN La presencia de múltiples dientes supernumerarios en la cavidad bucal es una alteración del desarrollo dental infrecuente en pacientes que no tienen un síndrome asociado, estos pueden inducir diversas alteraciones como maloclusiones, atraso en la erupción dentaria, reabsorción de los dientes adyacentes, formación de quistes, dilaceraciones radiculares y giroversiones. El presente caso clínico tiene como objetivo reportar la presencia de múltiples dientes supernumerarios, que ocasionaron la erupción ectópica y giroversión de piezas dentarias adyacentes, provocando una mordida cruzada en la cavidad oral de un paciente pediátrico no sindromico del Centro Dental Docente Cayetano Heredia en el 2019. El tratamiento realizado fue la extracción simple de los dientes supernumerarios erupcionados y la extracción compleja con colgajo de los retenidos.

SUMMARY The presence of multiple supernumerary teeth in the oral cavity is an infrequent alteration of dental development in patients who do not have an associated syndrome, that can induce various alterations such as malocclusions, delay in dental eruption, reabsorption of adjacent teeth, cyst formation, root dilacerations and giroversions. The objective of this clinical case is to report the presence of multiple supernumerary teeth, which caused the ectopic eruption and gyroversion of adjacent teeth, causing a crossbite in the oral cavity of a non-syndromic pediatric patient of the Centro Dental Docente Cayetano Heredia in 2019. The treatment performed was the simple extraction of the erupted supernumerary teeth and the complex extraction with flap of the retained ones.

Orthodontic management of a non-syndromic patient with concomitant bimaxillary hypohyperdontia: a case report

ABSTRACT Introduction: Tooth agenesis is one of the most common dental anomalies; however, the concomitant occurrence of opposite dental numerical variation of hypohyperdontia is extremely rare. Objective: To report the successful orthodontic management of a patient with non-syndromic concomitant bilateral agenesis of mandibular canines and two midline inverted supernumerary maxillary teeth. Case report: 21-year-old female patient with a chief complaint of protrusive right maxillary central incisor. The patient was diagnosed with a mild Class II skeletal base, Angle Class III molar relationship and increased overjet associated with hypohyperdontia. Anterior open bite accompanied with tongue-thrusting habit were also observed. Two temporary anchorage devices (TADs) were implanted at the buccal side of the maxillary molar region to control vertical height. Anterior teeth retraction was done after extraction of the maxillary first premolars, to improve the excessive overjet. The treatment mechanics involved lingual brackets system for the maxillary arch and transpalatal arch for anchorage control. Results: The total active treatment period was 35 months. Acceptable occlusion with increased bite force and contact area as well as functional excursion were established without interference, following complex orthodontic treatment with premolar substitution. The resultant occlusion and a satisfactory facial profile were maintained after 29 months of retention. Conclusion: The present case report provides implications regarding the orthodontic treatment of hypohyperdontia-associated substitution for missing teeth as an effective option for improving aesthetic and functional aspects.

RESUMO Introdução: A agenesia é uma das anomalias dentárias mais comuns; porém, a ocorrência concomitante de variações numéricas do tipo hipo-hiperdontia em ambas as arcadas é extremamente rara. Objetivo: Descrever o tratamento ortodôntico bem-sucedido de uma paciente não sindrômica que apresentava agenesia bilateral dos caninos inferiores e dois dentes supranumerários na região de linha média superior. Descrição: Paciente do sexo feminino com 21 anos de idade, apresentando queixa principal de protrusão dos incisivos centrais superiores. Foi diagnosticada com leve Classe II esquelética, relação de molares em Classe III de Angle, sobressaliência aumentada e hipo-hiperdontia. Além disso, a paciente apresentava mordida aberta anterior associada ao hábito de interposição lingual. Dois dispositivos de ancoragem temporária (DATs) foram instalados por vestibular na região dos molares superiores, para controle vertical. A retração dos dentes anteriores foi feita após a extração dos primeiros pré-molares superiores, para reduzir a sobressaliência acentuada. A mecânica adotada envolveu o uso de braquetes linguais na arcada superior e barra transpalatina para controle da ancoragem. Resultados: Após 35 meses de fase ativa desse tratamento complexo, com substituição dos pré-molares, obteve-se oclusão aceitável, com aumento da força oclusal e da área de contatos oclusais, bem como movimentos excursivos funcionais bem estabelecidos e sem interferências. Após 29 meses de contenção, verificou-se estabilidade da oclusão e do perfil facial. Conclusão: Esse relato de caso clínico mostra que o tratamento ortodôntico com substituição de dentes ausentes associados à hipo-hiperdontia é uma opção efetiva para a melhora dos aspectos estéticos e funcionais.

Clinical study of the minimally invasive extraction of impacted supernumerary teeth in 85 cases / 口腔疾病防治

Objective@# To explore the surgical design and surgical Methods for the minimally invasive extraction of embedded supernumerary teeth and to provide a reference for clinical practice.@* Methods@# A total of 87 embedded supernumerary teeth were removed from 85 patients. CBCT examination was performed before the operation. The nearest surgical approach was selected based on the distance between the embedded supernumerary teeth and the bony plate of the buccal tongue (lip and palate). The CBCT measuring ruler measured the maximum diameter of the impacted dental crown. According to the radius of the buccal and tongue directions of the crown, the upper and lower boundaries (bucco-lingual direction) of the bone to be deboned were determined with reference to the top of the alveolar crest or adjacent enamel cementum. A horizontal vertical line was made from the point to the meridian, and the length of the horizontal line was 1/2 the diameter of the impacted multiple crown. Thus, the radius determined the horizontal starting and ending points of the bone to be boneless. A trapezoidal or arcuate incision was made with an electric knife under block anesthesia and local infiltration anesthesia. The incision retained the gingival papilla. The upper and lower as well as the near and far midpoints of the bone were marked with a bone ruler. Starting from the midpoint area, the upper and lower points were connected. The mesial bone was removed in the mesial direction, and the range of the removed bone was slightly larger than the radius of the crown, showing the crown of the embedded supernumerary teeth. A surgical impact air handpiece with a 45-degree elevation angle or a piezosurgery device was used to divide the crown of the embedded supernumerary teeth into two parts. The crown and dental tissues were removed in pieces, the surgical area was cleaned and rinsed, and the wound was closed. Anti-inflammatory and swelling treatments were administered after the operation, and painkillers were prepared. The patients were revisited 7 days after the operation to check for wound healing. We asked and recorded the amount of painkillers taken by the patients. @*Results@#All patients had good wound healing 7 days after the operation, and the wounds were sutured. There was no swelling on the maxillofacial surface, and the degree of opening was basically normal. No other complications such as infection or numbness occurred. Fifty-eight patients did not take painkillers. @*Conclusion@#CBCT can be used to locate the embedded supernumerary teeth in bone. The surgical approach can be chosen based on the principle of proximity. During the surgery, the bone ruler is used to accurately locate the bone and remove the embedded supernumerary teeth in pieces, which can achieve a minimally invasive effect.

Massive Dentigerous Cyst Involving The Entire Right Maxilla - A Case Report

The Dentigerous cysts are odontogenic cysts which originates from reduced enamel epithelium in an unerupted tooth or it encloses the crown of an unerupted or impacted tooth at cementoenamel junction, it is estimated to about 20% of all epithelium lined cysts and 2nd most common odontogenic cyst after radicular cyst. Here is a case report of dentigerous cyst of right maxilla which has been discussed below.

A rare case of a maxillary fourth molar: Case report / Um caso raro de quarto molar maxilar: um relato de caso

INTRODUCTION: The objective of this clinical case report is to describe the presence of bilateral fourth molars. The occurrence of supernumerary teeth (ST) is a relatively unusual dental anomaly. It is even more unusual to find patients with distomolar teeth also denominated fourth molar teeth. PRESENTATION OF THE CASE: This article describes a clinical case of a 24-year-old patient presenting with a maxillary fourth molar, who was diagnosed by dental x-ray, and surgical resolution of the case. CONCLUSION: Tooth extraction surgery was the clinical procedure chosen to treat the impacted tooth.

INTRODUÇÃO: O objetivo deste relato de caso clínico é descrever a presença de quarto molares bilaterais. A ocorrência de dentes supranumerários (ST) é uma anomalia dentária relativamente incomum. É ainda mais incomum encontrar pacientes com dentes distomolares também denominados dentes do quarto molar. APRESENTAÇÃO DO CASO: Este artigo descreve um caso clínico de um paciente de 24 anos que apresentava quarto molar superior, diagnosticado por radiografia dentária, e resolução cirúrgica do caso. CONCLUSÃO: A cirurgia de extração dentária foi o procedimento clínico escolhido para tratar o dente impactado.

A Study of Supernumerary Teeth in a Population of Bihar

Background: Supernumerary teeth refers to an excessivenumber of teeth. Supernumerary teeth are usually detectedaccidentally during routine radiographic examination or whennormal tooth eruption is delayed or fails. The objective of thestudy is to investigate the prevalence and their distribution.Materials and Methods: In this study, 22652 patients wereevaluated in the out-patient department of Darbhanga MedicalCollege, Darbhanga, Bihar, for supernumerary teeth during theperiod of December 2016 to September 2018.Results: In this study we found that Twenty one males (0.09%)and eighteen females (0.08) supernumerary teeth among22652 patient. According to location wise distribution they werefound twenty seven in anterior region (0.12%), seven in molarregion, three impacted (0.01%), two in premolar region (0.01%)and one in canine region (0.00%).Conclusion: The study shows 0.172 prevalence among thepopulation and supernumerary teeth were more predominant inmale as compared to female and their distributions.

Application of cone beam CT in diagnosis of supernumerary teeth of adolescents / 吉林大学学报(医学版)

Objective: To observe the image and clinical characteristics of the supernumerary teeth of the adolescents, and to elucidate the clinical application value of cone beam CT (CBCT) in the diagnosis of supernumerary teeth. Methods: A total of 146 adolescents with supernumerary teeth scanned by CBCT and comfirmed were selected. The patient's gender, supernumerary teeth localization, number, shape and the root resorption of adjacent teeth were retrospectively analyzed. The changes in the root resorption rates of adjacent teeth induced by different supernumerary teeth shapes were evaluated. Results: The proportion of men to women with supernumerary teeth in 146 patients was 1. 98: 1 (97/49). Among them, 95 (65. 07%) patients were single supernumerary teeth. There were 203 supernumerary teeth in the 146 patients; among them, 132 (65.02%) supernumerary teeth were conical, 112 (55.17%) supernumerary teeth were inverted, and 48 (23.65%) supernumerary teeth were curved root. There was no statistically significant difference between the root resorption rates of adjacent teeth induced by the different shapes of supernumerary teeth (P>0. 05). Conclusion: CBCT can show the localization, the number of supernumerary teeth and other image and clinical charactersistics, which can provide the important evidence for the diagnosis and treatment of supernumerary teeth.

Dientes supernumerarios suplementarios en un paciente adulto parcialmente dentado: reporte de caso / Supplementary supernumerary teeth in a partially edentulous adult patient: case report

Aquellos casos en que se excede la cantidad normal de dientes para la fórmula primaria o definitiva se conocen como dientes supernumerarios o hiperodoncia. Esta puede presentarse de manera aislada o múltiple, unilateral o bilateral y afectar tanto a la maxila como a la mandíbula. Es más prevalente en hombres, en dentición permanente y en el maxilar, siendo el mesiodens el supernumerario encontrado con mayor frecuencia. Su etiología aún no está del todo clara, sin embargo, una hiperactividad de la lámina dental junto a una asociación de factores genéticos y ambientales sería la teoría más aceptada. Pueden ser asintomáticos y detectados solo en radiografías o pueden presentar manifestaciones clínicas como apiñamiento, retardo en la erupción, reabsorción radicular, diastemas entre otros. El tratamiento depende del tipo de diente y de su relación con las estructuras adyacentes. En el siguiente reporte presentamos el caso de un paciente de sexo masculino, de 54 años de edad, no sindrómico, desdentado parcial superior e inferior que acude a una consulta dental privada (Temuco) para solicitar tratamiento rehabilitador. En la radiografía panorámica de rutina se observan dos dientes supernumerarios, uno a cada lado de la mandíbula y en la región premolar. Al examinar este hallazgo con tomografía computarizada cone beam se determina que el supernumerario del lado derecho corresponde a un premolar suplementario y el de la izquierda a un supernumerario de morfología molariforme. En este caso se decide extraer los dientes debido a la localización de estos y a las implicancias con el tratamiento rehabilitador posterior.

Cases in which the normal amount of teeth is exceeded for the primary or permanent dentition formula, are known as supernumerary teeth or hyperdontia. This can occur in single, or multiple form, unilaterally or bilaterally, and affect both maxilla and mandible. It is more prevalent in men, in permanent dentition and in the maxilla; the mesiodens type being the most common supernumerary. Its etiology is still not entirely clear, however, hyperactivity of the dental lamina associated to genetic and environmental factors is the most accepted theory. Supernumerary teeth can be asymptomatic and can only be detected in radiographs. They can also present various clinical manifestations such as dental malposition, delay in dental eruption, root resorption and diastemas. Treatment depends on the type of tooth and its relation with adjacent structures. In the following report we present the case of an asymptomatic, upper and lower partially edentulous 54-year-old male patient, who requested rehabilitation treatment at a private dental clinic in Temuco, Chile. In routine panoramic radiography, two supernumerary teeth were observed, one on each side of the mandible and in the premolar region. Upon reviewing these findings with cone beam computed tomography, it was determined that the supernumerary on the right side corresponded to a supplementary premolar and the supernumerary on the left side corresponded to a supernumerary of molariform morphology. In this case we determined to extract the teeth, due to their location and impact on subsequent rehabilitation treatment.

Presencia del cuarto molar. Revisión de la literatura / Presence of the fourth molar. Literature review

Resumen: El cuarto molar, también llamado distomolar, es una variante de número y forma que se presenta como una alteración durante la odontogénesis, pueden ser eumórfico o dismórfico, único o múltiple, erupcionado o retenido, de forma unilateral o bilateral y se puede presentar en ambos maxilares. La etiología es desconocida, pero existen varias teorías que justifican el desarrollo de esta alteración dentaria como la duplicación de la lámina dental, su proliferación horizontal o hiperactividad de ésta; otros factores pueden ser los hereditarios, la división completa del germen dentario o regresión filogenética. El cuarto molar se encuentra en un espacio muy importante, que al desconocer su existencia o técnica adecuada para su extracción, las posibilidades de tener severas complicaciones transy postoperatorias son altas. Se realiza una revisión bibliográfica de diferentes artículos y textos en diferentes años para determinar de forma más clara el origen y formación de este diente supernumerario.

Abstract: Fourth molars, also called distomolars, are a variant in shape and number appearing as alterations during odontogenesis. They can be eumorphic or dismorphic, single or multiple, erupted or impacted, unilateral or bilateral, and can appear in both jaws. They are of unknown etiology, but there are several theories to justify these tooth alterations such as dental lamina duplication, its horizontal proliferation or its hyperactivity. Other factors can be hereditary factors, full division of tooth bud or phylogenetic regression. Fourth molars are found in a very important space, and when their own existence or the suitable extraction techniques are unknown, severe complications can frequently occur during and after surgery. A literature review was undertaken, examining different articles and texts of different years, in order to better determine the origins and formation of this supernumerary tooth.

Bilaeral maxillary fourth molars: A case report and literature review / 吉林大学学报(医学版)

Objective: To report one case of bilateral maxillary fourth molars, and to explore the occurrence and treatment method of additional fourth molar. Methods: The case materials of one patient with bilateral maxillary four molars were collected, and the information was record. Combined with reviewing the relevant literatures, the clinical data, complication and treatment of one patient with bilateral maxillary fourth molars were retrospectively analyzed. Results: The patient was diagnosed due to left maxillary posterior teeth area intermittent pain for several months and the increased pain for 5 d; at the same time, there was no abnormal appearance inducing the symptoms detected by speciality check-up. The pantomography showed the four molars in bilateral maxillary, and the fourth molars impacted the third molar root's absorption. The fourth molar crown was smaller and the root was shorter. The 18, 28, 29 teeth were removed, and the left maxillary posterior teeth area intermittent pain disppeared. Conclusion: The occurrence of additional fourth molar is a relatively rare demal dysplasia. However, there are some complications following with the fourth molar. Early diagnosis and treatment are essential.

Clinical application of gelatin sponge in the removal of multiple teeth in children / 中国基层医药

Objective To discuss the clinical application value of gelatin sponge in the extraction of children's multiple teeth.Methods From July 2014 to July 2017,100 children with multiple teeth in the Children′s Hospital Affiliated to Zhengzhou University were selected,and they were divided into two groups by random number table method,with 50 cases in each group.The observation group after routinely removal of supernumerary tooth,according to the size of the tooth extraction wound,chose proper absorbability gelatin sponge after tamping,para suture wounds,while the control group received routine hemostasis,para suture wounds without stuffing.The postoperative bleeding,pain and infection were compared between the two groups.Results The incidence rate of postoperative hemorrhage in the observation group was 2％,which was lower than 16％in the control group,and the difference was statistically significant(χ2 =4.40,P<0.05).The incidence rate of postoperative pain in the observation group was 18％,which in the control group was 20％,there was no statistically significant difference between the two groups(χ2 =0.06,P>0.05).No infection was found in the two groups.Conclusion Gelatin sponge can be used as one of the effective means of preventing postoperative bleeding in children.

Supernumerary Teeth: An Overview

Supernumerary teeth (SNT) are extra teeth to the normal complement of teeth in both dentitions. These SNT could be appear in any region of both jaws. Males are commonly affected by SNT than the females. Most commonly seen SNT are mesiodens, very rarely seen SNT are distomolars. Identification and localization of SNT are very important for diagnosis and management. SNT may cause various complications that include delayed or impaired eruption of adjacent teeth to cyst formation, and eruption into nasal cavity. Hence, the early identification and appropriate management is essential to prevent the possible complications.

Cone beam computed tomography for evaluation of impacted supernumerary teeth: a case report / Tomografía computarizada con haz de cono para evaluación de dientes supernumerarios impactados: reporte de caso

Supernumerary paramolars are the rare anomalies of the maxillofacial complex. These are more common in the maxilla than in the mandible. Supernumerary teeth are an infrequent developmental alteration that can appear in any area of the dental arches and which are often associated with several syndromes such as cleidocranial dysplasia or Gardner syndrome. Multiple supernumerary teeth in individuals with no other associated diseases or syndromes are very uncommon. Objective: To evaluate the value of cone-beam CT (CBCT) in the diagnosis and orientation of supernumerary teeth in the dental arches. Treatment: After taking a cone beam computed tomograph (CBCT), surgical extraction was performed under local anaesthesia. Conclusion: The position of the supernumerary teeth is varied in the maxilla, and often causes permanent dentition complications. CBCT imaging yields accurate 3-dimensional pictures of supernumerary teeth, local dental and bony structures, which is helpful for diagnosis and orientation of supernumerary teeth. Cone beam computed tomography is crucial for exact localization, for treatment planning, and for the surgical approach in cases of multiple supernumerary teeth.

Application of Cone-Beam Computed Tomography (CBCT) in diagnosis and evaluation of Supernumerary Teeth

Background and Objectives: The aim of this paper is to describe the application of a newly developed three-dimensional imaging system, Cone-Beam Computed Tomography in the diagnosis and evaluation of supernumerary teeth.Material and Methods: One hundred and eighty-five patients with supernumerary teeth (134 males and 51 females) were included in this study. Patients ranged in age from 6 to 38 years. Supernumerary teeth were detected by clinical examination and conventional radiographs. Moreover, careful investigation for more details was made with the cone beam computed tomography. Supernumerary teeth which were detected with the examinations of the cone beam computed tomography images were analyzed according to the number, location, shape and position.Results: Males were affected more than females in a ratio of 2.6:1. 95 % supernumerary teeth were located in maxilla and 5 % in the mandible. 71.6% of supernumerary teeth were conical in shape. 93.6% supernumerary teeth were impacted and 6.4% were erupted. A total of 198 supernumerary teeth were found to be present in palatal/lingual side and 24 were found on the buccal side. 80.5 % of the patients had one, 18.9 % had two, and 0.5 % had three supernumeraries.Conclusion: Detailed examinations and evaluations of these teeth with Cone-Beam Computed tomography (CBCT) yields accurate 3-dimensional pictures of supernumerary teeth, local dental and bony structures which are very beneficial in terms of proper diagnosis and treatment planning and preventing complications which may occur.

Nasopalatine Duct Cyst Associated With Supernumerary Teetha Case Report

The nasopalatine duct cyst is the most common non-odontogenic developmental cysts, comprising 10% of jaw cysts and occurring in 1 of every 100 persons with a slight male predilection, the mean age being 42.5 years. This article reports an unusual case of nasopalatine duct cyst occurring in an 11year male pediatric patient associated with supernumerary teeth.

Comparison between propofol and propofol-remifentanil sedation under target-controlled infusion for impacted supernumerary teeth extraction surgery for children / 华西口腔医学杂志

Objective The aim of this study is to compare sedation titrated under target-controlled infusion of propofol and propofol-remifentanil for impacted supernumerary teeth extraction surgery for children. Methods A total of 60 children with anterior maxillary region impacted supernumerary teeth extraction surgery were divided randomly into two groups, namely, propofol group (group P, n=30) and propofol-remifentanil group (group PR, n=30). In group P, a titrated infusion of propofol was started until the modified observer's assessment of alertness/sedation (OAA/S) scale reached level 3 before the actual surgery. In group PR, a remifentanil infusion with a target plasma concentration of 1 ng·mL⁻¹ was started until the operation was finished. A titrated infusion of propofol was also started until the modified OAA/S score reached level 3 before the actual surgery. The Houpt behavior scale was adopted to evaluate the cooperation of each patient in both groups. The heart rate, blood pressure, respiratory rate, oxyhemoglobin saturation, and Narcotrend index, complications, adverse reactions and propofol infusion of all patients were recorded during the operation. Results The Houpt behavior scales in group PR were better than those in group P (P<0.05). The oxyhemoglobin saturation and respiratory rate in group PR were lower than that in group P (P<0.05). The heart rate, blood pressure and NI in two groups were no significant difference (P>0.05). The incidence of respiratory depression and anterograde amnesia in group PR were higher than that in group P (P<0.05). Conclusion Sedation titrated under the target-controlled infusion of propofol and that titrated under propofol-remifentanil for impacted supernumerary teeth extraction surgery for children are safe. The sedation titrated under target-controlled infusion of propofol-remifentanil is better than sedation by propofol when inhaling oxygen.