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Introducción: La posición del tercer molar mandibular durante su erupción puede influir en el resultado del tratamiento de ortodoncia o que se necesita recurrir a este nuevamente. Objetivo: Describir la posición de los terceros molares mandibulares durante su erupción en pacientes que recibieron tratamiento ortodóncico en el consultorio Desing Dental en la ciudad de Santo Domingo de los Tsáchilas, Ecuador. Método: se realizó un estudio descriptivo transversal, el universo lo constituyeron el total de pacientes que recibieron tratamiento ortodóncico en edades comprendidas entre 13 y 33 años¸ el muestreo fue aleatorio simple y la muestra quedó conformado por 23 pacientes, 11 del sexo masculino y 12 del femenino. La recolección de la información se realizó a través de la revisión documental de los informes radiográficos mediante una guía confeccionada para este fin. Los resultados se presentaron en tablas y fueron contrastados con los de otras investigaciones. Se respetaron los principios éticos. Resultados: La posición de los terceros molares más común según edad y sexo fue: para el sexo masculino de 11 pacientes, 2 presentaron la vertical, 8 la mesioangular y 1 la horizontal; mientras que, en el sexo femenino con una muestra de 12 pacientes: 2 pacientes presentaron la posición vertical, 8 la mesioangular y 2 la distoangular. Conclusiones: La posición más frecuente de los terceros molares durante su erupción en los pacientes con tratamiento de ortodoncia fue la posición mesioangular.
Introduction: The position of mandibular third molar during its eruption can influence on the outcome of orthodontic treatment or the need to turn to an orthodontic treatment again. Objective: To describe the position of mandibular third molars during eruption in patients who received orthodontic treatment at the dental office Desing Dental, in the city of Santo Domingo de los Tsáchilas, Ecuador. Method: A cross-sectional descriptive study was carried out; the universe was constituted by the total of patients who received orthodontic treatment, patients between 13 and 33 years of age; the sampling applied was simple random and the sample selected gathered 23 patients, 11 male and 12 female. The information collected was obtained throught a documentary review of the radiographic reports, using a guide prepared for this purpose. The outcomes were presented in tables and were contrasted with those of other investigations. Ethical principles were respected. Results: The most common position of the third molars according to age and sex was as follow: From the 11 male patients, in 2 of them the position was vertical, 8 mesioangular and 1 horizontal; whereas in the 12 female patients, in two of them the position was vertical, 8 mesioangular and 2 distoangular. Conclusions: The most frequent position of third molars during eruption in patients undergoing orthodontic treatment was the mesioangular position.
Introdução: A posição do terceiro molar inferior durante sua erupção pode influenciar no resultado do tratamento ortodôntico ou que seja necessário recorrer a ele novamente. Objetivo: Descrever a posição dos terceiros molares inferiores durante sua erupção em pacientes que receberam tratamento ortodôntico no consultório Desing Dental na cidade de Santo Domingo de los Tsáchilas, Equador. Método: Foi realizado um estudo descritivo transversal, o universo foi constituído pelo número total de pacientes que receberam tratamento ortodôntico entre 13 e 33 anos, a amostragem foi aleatória simples e a amostra foi composta por 23 pacientes, 11 masculinos e 12 femininos. A coleta de informações foi realizada por meio da revisão documental dos laudos radiográficos utilizando um roteiro elaborado para esse fim. Os resultados foram apresentados em tabelas e contrastados com os de outras investigações. Os princípios éticos foram respeitados. Resultados: A posição mais comum dos terceiros molares de acordo com idade e sexo foi: para o sexo masculino de 11 pacientes, 2 apresentaram a vertical, 8 a mesioangular e 1 a horizontal; enquanto, no sexo feminino com uma amostra de 12 pacientes: 2 pacientes apresentaram a posição vertical, 8 a mesioangular e 2 a distoangular. Conclusões: A posição mais frequente dos terceiros molares durante sua erupção em pacientes com tratamento ortodôntico foi a posição mesioangular.
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Background: Impacted teeth, if left untreated, have a potentialto induce various complications. The mandibular third molar isthe most frequently impacted tooth with incidence varies from9.5% to 68% in different populations. The aim of the presentcross-sectional study was to assess the prevalence andpattern of mandibular 3rd molar impaction.Materials and Methods: A retrospective cross-sectional studywas conducted over the period of 1 year in which 270 cases ofpatients aged between 20 and 50 years were selected for thestudy. Parameters studied into the study were an age group,gender, location of the impacted third molar, angulation,position, and level of the impacted tooth. The data analysiswas done using the Statistical Package SPSS version 22.0.Results: In the present study total patients were 270 in which61.48% were males and 38.51% were females. Impacted teethwere maximum in both males and females in the age group 20-30 years. Mesioangular kind of impaction was maximum inboth males and females. According to Pell and Gregoryclassification at level B impactions were maximum (66.3%) andclass II impactions were maximum (51%).Conclusion: Our study concluded that the prevalence ofmandibular impactions were common in males than females.The study also noted that mesioangular impactions were themost common type of impaction. The least common form ofimpactions was the transverse types.
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Introduction: One of the most commonly performed procedures in dentistry is third molar removal and it is the most commonly extracted permanent tooth. Most of the patient’s first visit was with general dental practitioners about third molar extraction. Hence the possibility of surgical complications must be evaluated against the benefits of the extraction. Aims and Objectives: To assess the level of comfort and knowledge among general dental practitioners regarding third molar extractions. Materials and methods: It is a descriptive cross-sectional study using a questionnaire-based survey. The questionnaire consisted of questions regarding demographic characteristics of general dental practitioners and also their level of comfort and knowledge regarding third molar extractions. Results: Total 142 general dental practitioners out of 177 have completed the questionnaire with a response rate of 80.22%. There was a statistically significant difference between the level of comfort score (H(2)=11.964, p=0.003), with a median of 24 for general dental practitioners with an experience of more than 10 years, and median of 18 for those with an experience between 5-10 years and median of 12 for those with an experience up to 5 years. There was a statistically significant difference (p=0.001). Conclusion: General dental practitioners in Riyadh, Saudi Arabia have reported a very low level of comfort regarding third molar extraction. They reported infrequent training and education in third molar extraction skills and knowledge. Those who attended continuous dental education courses and workshops related to third molar extraction in the past 2 years and those with more than 5 years of experience were significantly associated with a higher level of comfort among general dental practitioners.
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This study evaluated the prevalence and eruption's pattern of impacted mandibular third molars (IMTM) and the influence of their eruption status on the distal caries of mandibular second molars (MSM) using cone-beam computed tomography (CBCT). Material and methods: CBCT images taken for different purposes in private dental practices were analyzed retrospectively. Radiographic assessment included: prevalence of IMTM, degree of angulation, level of impaction and type of IMTM. Furthermore, the distance between the cement-enamel junctions (CEJ) of second and third molars and the occurrence of caries lesion on the distal surface of MSM was also evaluated. Data were analyzed by chi square test and logistic regression was used to find the association between distal caries of MSM and eruption status of IMTM. Results: Three hundred and eight CBCTs were screened, the prevalence of IMTM was 36.88% and their angulation degree were mostly less than 90º (mesioangular). Amongst those with impaction, 58 subjects (43%) had distal caries on MSM, 29.6% in females and 30.4% in the age group 19-27 years. Caries on the distal side of MSM were significantly associated with age, level and type of impaction, angulation degree and CEJ distances (p<0.05). Conclusions: The prevalence of IMTM is high (36.88%) and there are significant relationships between angulation degree, level and type of impaction, and CEJ distances with caries on the distal side of MSM.
Introducción: Este estudio evaluó la prevalencia y el patrón de erupción de terceros molares mandibulares impactados (TMMI), y la influencia de su estado de erupción en la caries distal de los segundos molares mandibulares (SMM) mediante tomografía computarizada de haz cónico (TCHC). Material y métodos: se analizaron retrospectivamente las imágenes de TCHC tomadas para diferentes fines en prácticas dentales privadas. La evaluación radiográfica incluyó: prevalencia de TMMI, grado de angulación, nivel de impacto y tipo de TMMI. Además, también se evaluó la distancia entre la unión amelocementaria (UAC) de los segundos y terceros molares y la aparición de lesión de caries en la superficie distal de SMM. Los datos se analizaron mediante la prueba de chi cuadrado y se usó la regresión logística para evaluar asociaciones entre la caries distal de SMM y el estado de erupción de TMMI. Resultados: Se examinaron 308 TCHC, la prevalencia de TMMI fue de 36.88% y su grado de angulación fue mayoritariamente menor a 90º (mesioangular). Entre aquellos con impacto, 58 sujetos (43%) tenían caries distales en los SMM, 29.6% eran mujeres y 30.4% pertenecieron al grupo de edad de 19-27 años. Las caries en el lado distal de MSM se asociaron significativamente con la edad, el nivel y el tipo de impactación, el grado de angulación y las distancias UAC (p<0.05). Conclusiones: la prevalencia de TMMI es alta (36.88%) y existen relaciones significativas entre el grado de angulación, el nivel y el tipo de impacto, y las distancias UAC con presencia de caries en el lado distal de los SMM.
Subject(s)
Humans , Male , Female , Adult , Young Adult , Tooth, Impacted , Dental Caries/etiology , Dental Caries/epidemiology , Molar, Third/injuries , Bicuspid , Prevalence , Retrospective Studies , Tooth Cervix , Cone-Beam Computed Tomography , Iraq/epidemiology , Mandible/diagnostic imaging , MolarABSTRACT
Background: Removal of wisdom teeth is a regularlyperformed dental treatment by non-specialist and specialistdentists. Damage to the inferior alveolar nerve after theremoval of wisdom molars occurred in 0.4 to 8.4% of subjects,lesser than 1% of cases it is permanent. The present studywas conducted with the aim to assess the intraoperativecomplications occurring during third molar removal.Materials and Methods: The residents of the departmentperformed all the dental surgical procedures. Classification ofthe impaction was done according to Pell and Gregory andWinter’s classification. The methods of osteotomy or toothsectioning, duration of surgery and any complications that wasencountered during the surgery like hemorrhage, displacementof teeth, damage to adjacent teeth or injury to soft tissues wasrecorded in a tabulated version.Student t test was used for analysis. Probability value of lessthan 0.05 was regarded as significant.Results: Fracture of tuberosity was seen in 2.3% cases, therewere 1% (n = 3) cases of hemorrhage, there were 0.6% (n = 2)cases each of apex fracture. There were two cases ofmesioangular impaction and 1 case of distoangular impaction.Conclusion: The most commonly associated intraoperativeaccident in the present study was tuberosity fracture
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Background: Osteotomy of the bone surrounding mesio-angularly impacted tooth is part of the surgical procedure required for their extraction and has evolved in contemporary practice from the use of mallet/chisel to dental drill. Objective: To describe the extractions of mesio-angularly impacted mandibular third molars using Crane pick dental elevator for the osteotomy procedure. Materials and Methods: This was a prospective clinical study of patients done at the Oral and Maxillofacial Surgery Clinic of our institution, over three years period. With gentle, controlled, downward force, bone was removed with Crane pick elevator to expose the mesio-angularly impacted tooth cervical line, creating buccal and distal troughs that were linked and made in cancellous bone. The clinical variables evaluated were age, gender, and reason(s) for extraction, duration of treatment/osteotomy, degree of postoperative trismus and swelling, and complaints during follow-Up. Results: The ages of the 74 patients studied ranged from 18-63 years with mean age of 32.6± 2.8 years. Majority (83.8%) were in the age category of 16-45 years (P=0.001). The duration of the surgery from incision to placement of the last suture ranged from 12.8 to 17.1 minutes with mean 14.3±1.4 minutes. The duration of the osteotomy including the delivery of the tooth from their sockets ranged from 3.2 to 7.4 minutes with mean 5.3±0.7 minutes. The younger the patient's age, the shorter the osteotomy procedure (P=0.001). Conclusion: This study showed that certain mesio-angularly impacted mandibular third molars can be extracted using only Crane pick elevator.
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The treatment of low mesioangular impaction of second molar is difficult because of the little crown exposure and the influence of the third molar.We used modified lingual arch as a stronger anchorage to upright the lower second molars combined with manufactured spring,the treatment procedure is simple and effective.
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One of the most common operations which have been performed on young adults may be the extraction of third molars. And then, we can meet many reports on third molars which were studied by lots of specialists. Many domestic reports which dealt with pathologic condition, impaction, eruption and angulation state of third molars have already been reported. The author reported the statistical survey on mandibular third molars of Korean through dental radiography in 1963. Until now, the extraction of third molars may be one of the most common operation which were done at the department of oral & maxillofacial surgery in dental hospital. But, the more we can see certain diseases easily, the more we can neglect to study on it. So now, it's true that we cannot meet the reports about the third molars. The author performed the clinical study on the eruption state of mandibular third molars of Korean and compared with the results in 34 years ago. Following results were obtained 1. It was found that the largest number was ClassI(483 cases) among the total 1004 cases in the relation of the tooth to the ramus of the mandible and second molar. 2. In ClassI, the number of cases was increased in more than 17-year-old age. In ClassII, the number of the cases was decreased as it grows older. 3. It was found that sex distributions were equal in the classification of Gregory. And the largest case number was ClassI in both of male and female. 4. The mesio-angular position in all cases was the largest number. Among Class I,II, and III, ClassIII was the only group that disto-angular position was found. Horizontal positions were found in ClassII,III more than in ClassI. Vertical positions were found in Class I more than in Class II. 5. In Winter`s classification, the largest case number was the meio-angular position in both of male and female and sex distributions were equal in all positions. 6. In Winter`s classification, the largest case number was the mesio-angular position in all ages.