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Abstract This case series included a tomographic, microbiological, and histopathological description of 15 secondary apical periodontitis (SAP) lesions obtained by apical microsurgery performed in 10 patients to better understand the etiology and pathogenesis of SAP. Preoperative tomographic analyses were performed through Cone beam computerized tomography - Periapical index (CBCT-PAI), and apical microsurgeries were then carried out. The removed apices were used for microbial culturing and for molecular identification using PCR for the detection of 5 strict anaerobic bacteria (P. gingivalis, P. intermedia, P. nigrescens, T. forsythia, and T.denticola) and 3 viruses Herpes simplex viruses (HSV), Cytomegalovirus (CMG) and Epstein-Barr Virus (EBV) by nested PCR. The removed apical lesions were histologically described. Univariate statistical analyses were performed by using STATA MP/16 (StataCorp LLC, College Station, TX, United States). CBCT-PAI analyses revealed PAI 4 and PAI 5 score lesions that involved cortical plate destruction. Eight SAPs were positive by culture, while nine SAP lesions were positive by PCR. Fusobacterium species were the most frequently cultured organisms in 7 SAP lesions, followed by D. pneumosintes in 3. In contrast, by single PCR, T. forsythia and P. nigrescens were detected in 5 lesions, T. denticola in 4 lesions, and P. gingivalis in 2 lesions. Twelve periapical lesions were granulomas, and the remaining three SAP lesions were radicular cysts. In conclusion, this case series study revealed that secondary apical lesions presented tomographic involvement of PAI 3 to 5, and that most SAP lesions were apical granulomas containing anaerobic and facultative microorganisms.
Resumo Esta série de casos incluiu uma descrição tomográfica, microbiológica e histopatológica de 15 lesões de periodontite apical secundária (SAP) obtidas por microcirurgia apical realizada em 10 pacientes para melhor compreender a etiologia e patogénese do SAP. As análises tomográficas pré-operatórias foram realizadas através de tomografia computadorizada de feixe cônico - índice Periapical (CBCT-PAI), e as microcirurgias apicais foram então realizadas. Os ápices removidos foram utilizados para a cultura microbiana e também para a identificação molecular por PCR para a detecção de 5 bactérias anaeróbias rigorosas (P. gingivalis, P. intermedia, P. nigrescens, T. forsythia, e T.denticola) e 3 vírus Herpes simplex (HSV), Cytomegalovirus (CMG) e Epstein-Barr Virus (EBV) por PCR aninhada. As lesões apicais removidas foram descritas histologicamente. Foram realizadas análises estatísticas univariadas utilizando STATA MP/16 (StataCorp LLC, College Station, TX, Estados Unidos da América). As análises CBCT-PAI revelaram lesões PAI 4 e PAI 5 que envolveram a destruição da placa cortical. Oito SAPs foram positivos por cultura, enquanto nove lesões de SAP foram positivas por PCR. As espécies de Fusobacterium foram os organismos mais frequentemente cultivados em 7 lesões SAP, seguidas por D. pneumosintes em 3. Em contraste, por PCR simples, T. forsythia e P. nigrescens foram detectados em 5 lesões, T. denticola em 4 lesões, e P. gingivalis em 2 lesões. Doze lesões periapicais foram granulomas, e as restantes três lesões SAP foram cistos. Em conclusão, este estudo de série de casos revelou que as lesões apicais secundárias apresentavam envolvimento tomográfico de PAI 3 a 5, e que a maioria das lesões de SAP eram granulomas apicais contendo microrganismos anaeróbios e facultativos.
ABSTRACT
Objetivo: La reabsorción dentinaria interna es un pro- ceso causado por la actividad odontoclástica asociada princi- palmente a la inflamación pulpar crónica y/o traumatismos, y se caracteriza por la pérdida progresiva de tejido dentinario y la posible invasión al cemento. El presente informe describe el diagnóstico y tratamiento de un molar inferior que presentó un cuadro sintomático de reabsorción dentinaria interna. Caso clínico: Un paciente de 38 años fue derivado a la consulta por presentar una zona de reabsorción interna en un segundo molar inferior. Durante el examen clínico y ra- diográfico se tomó una radiografía preoperatoria periapical con radiovisiógrafo en la que se observó la presencia de un área compatible con el diagnóstico de reabsorción dentinaria interna, el que fue posteriormente confirmado por medio de una tomografía computada de haz cónico. La imagen de la lesión se presentó como una zona radiolúcida deformante de bordes nítidos, localizada a nivel de la cámara pulpar. El tra- tamiento consistió en la extirpación de la pulpa coronaria y de la instrumentación, desinfección y obturación de los conduc- tos radiculares y la cavidad de acceso. En el control clínico y radiográfico realizado luego de 3 años se observó que el paciente estaba asintomático y las estructuras perirradiculares se encontraban dentro de los límites normales. La observación histológica del material removido de la cámara pulpar reveló la presencia de un tejido granulomatoso con numerosos vasos sanguíneos y escasos focos micro hemorrágicos. Hasta el momento, el tratamiento endodóntico es el pro- cedimiento indicado para el tratamiento de la reabsorción dentinaria interna. Se destaca la importancia de la tomografía computada de haz cónico para el diagnóstico y tratamiento temprano de las reabsorciones dentinarias internas a efectos de contar con un pronóstico favorable (AU)
Aim: Internal dentine resorption is aprocess caused by odontoclastic activity, mainly associated with chronic pulpal inflammation and/or trauma, and it'scharacterized by a pro- gressive loss of dentine tissue and the possible invasion of the cementum. This report describes the diagnosis and treatment of a lower molar that presented a symptomatic case of inter- nal dentine resorption. Clinical case: A 38-years old patient was referred to the office because of presenting an area of internal resorption in a lower second molar. During clinical and radiographic exam- ination, a periapical preoperative radiograph with radiovisio- graph was taken, in which the presence of an area compatible with the diagnosis of internal dentine resorption was observed, which was later confirmed by a cone-beam computed tomog- raphy.The image of the lesion was presented as a deforming radiolucent area with sharp edges, located at pulp chamber level. Treatment consisted of the removal of the coronary pulp and the instrumentation, disinfection and filling of the root ca- nals and the access cavity. In the clinical and radiographic control carried out 3 years after procedure, it was observed that the patient was asymptomatic and the periradicular struc- tures were within normal limits. The histological observation of the removed material from the pulp chamber revealed the presence of a granulomatous tissue with numerous blood ves- sels and scarce micro hemorrhagic focus. Until now, the endodontic treatment is the indicated pro- cedure to treat internal dentine resorption. It is necessary to highlight the importance of the cone-beam computerized to- mography for the early diagnosis and treatment of internal dentine resorptions in order to have a favorable outlook (AU)
Subject(s)
Humans , Male , Adult , Root Resorption/therapy , Root Resorption/diagnostic imaging , Tooth Crown/physiopathology , Root Canal Therapy/methods , Follow-Up Studies , Dental Pulp Diseases/complications , Cone-Beam Computed Tomography/methods , Molar/physiopathologyABSTRACT
Background: A virtuous consideration of root canal morphology is required. Complications all through and after endodontic therapy are frequently caused by variances in the anatomy of root canals in primary teeth. The goal of present study was to determine the number and shape of root canals in primary incisors and molars, as well as the pertinency of cone beam computerised tomography (CBCT) in doing so.Material & Methods:On a total of 60 primary molars and incisors with complete root length, CBCT was used to assess the number of roots, number of canals, width of root canal at cementoenamel junction and middle-third, length and angulations of roots. The information was statistically analysed. Results:The CBCT revealed that 13 percent of mandibular incisors had bifurcation of the root canal in the middle third, while 20% of mandibular molars had two canals in the distal root. The distobuccal root canal diameter of maxillary molars and the mesiolingual canal diameter of mandibular molars were determined to be the smallest.Conclusions:Cone beam computed tomography (CBCT) is a comparatively new and effective technology that can be used in conjunction with conventional radiography to examine variations in root canal morphology in primary teeth.
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Palatal masticatory mucosa is the main donor site for soft tissue grafts, thus determination of its thickness is of paramount importance as it affects the surgical outcome. Thus in this study we tried to evaluate and compare the mean thickness of palatal masticatory mucosa with the help of direct bone sounding using a periodontal probe and cone beam computerized tomography (CBCT) at different regions. Methods: 30 subjects in the age group of 20-50years were included in this study and had to undergo bone sounding with periodontal probe and subsequently cone beam computerized tomography in relation to canine, 1st premolar, 2nd premolar, 1st molar and 2nd molar at four different points, i.e., 2, 5, 8 and 12 mm from the gingival margin. Results: On comparison between the two techniques nonsignificant difference was found with slightly higher values obtained by CBCT. The tissue at the premolars was thicker than that measured at the molars. There was also increase in tissue thickness as the distance from gingival margin was increased except for canine at the depth of 12mm. Conclusion: It was concluded that CBCT can be used as non-invasive and accurate method to determine the soft tissue thickness of the palatal masticatory mucosa than clinical measurements made via bone-sounding
ABSTRACT
Ectopic eruption of teeth is a rare phenomenon although there have been reports of teeth in the nasal septum, mandibular condyle, and maxillary sinus. This impaction can present itself in a variety of ways such as chronic or recurrent sinusitis, sepsis, and facial numbness and can also be asymptomatic. The aim of this study was to describe, by means of research literature and by a case report, the characteristics and occurrence of ectopic eruption in the maxillary sinus. We have analyzed and compared clinical cases of ectopic teeth in the maxillary sinus with a search on PubMed utilizing keywords such as “ectopic,” “teeth,” “sinus,” “maxillary,” and Boolean operators “or” and “and” up until 2016. Fifty-one cases were found, of which 53% were female. The age ranged between 3 and 72 years, with an average age of 28.36 years. The higher prevalence of ectopic teeth is the 3rd molars. Ten of these teeth are associated with a dentigerous cyst, 1 by an osteoma, and 2 by soft tissue. Standard treatment for an ectopic tooth is extraction, but for other patients, treatment of choice in asymptomatic ectopic tooth cases is continued observation. Ectopic teeth tend to form a cyst or tumor if not managed.
ABSTRACT
Osteoarthrosis (OA) is a degenerative disease characterized by loss of joint cartilage, remodelling of the subchondral bone, narrowing of joint spaces and the formation of osteophytes. Animal models are used to study the mechanisms of OA, as well as to test the effects of anti-osteoarthrosis drugs. The objective of the present study was to determine the changes identifiable by imaging techniques occurring in rabbit temporomandibular joints (TMJ) at 15, 25 and 45 days after OA inducement by monoiodoacetate (MIA) and papain. The imaging technology used was cone-beam computerised tomography (CBCT). The model animals were 22 young adult male New Zealand rabbits, divided randomly into three study groups: Four rabbits in the control group, nine in the papain experimental group and nine in the monoiodoacetate (MIA) experimental group. OA was induced by arthrocentesis in the lower compartment of both TMJs. The rabbits were examined by CBCT at 15, 25 and 45 days after the injection of MIA and papain. The mandibular condyles presented loss of their rounded shape, deformation of the condyle or mandibular fossa, cortical irregularity, cortical wear and changes in the dimensions of the condyle. OA induction by MIA and papain generates changes observable by CBCT in the dimensions of the mandibular condyle in rabbits. Both inducers promote signs compatible with OA on the joint surfaces of the TMJ; MIA promotes more expressive changes.
La osteoartrosis (OA) es una enfermedad degenerativa caracterizada por la pérdida de cartílago articular, remodelación ósea subcondral, estrechamiento del espacio articular y formación de osteofitos. El modelo animal es utilizado para estudiar los mecanismos de la OA, así como testar el efecto de drogas anti-osteoartrosis. El objetivo de este estudio fue determinar los cambios imagenológicos, mediante tomografía computarizada cone-beam (TCCB), que se generan en 15, 25 y 45 días, luego de la inducción de OA por medio de Monoiodoacetato (MIA) y Papaína sobre la ATM de conejos. Fueron utilizados 22 conejos machos, adultos jóvenes, de raza New Zealand divididos aleatoriamente en 3 grupos de estudio: 4 conejos para un grupo control, 9 conejos para el grupo experimental con Papaína y 9 conejos para el grupo experimental con monoiodoacetato (MIA). Se realizó la inducción de OA por la técnica de artrocentesis en el compartimiento inferior de ambas ATMs. Se les realizó examen de TCCB en los días 15, 25 y 45 tras la inyección de MIA y de papaina. Los cóndilos mandibulares presentaron pérdida de forma redondeada de cóndilo, deformidad de cóndilo o fosa mandibular, irregularidad de corticales, desgaste de corticales, cambio de dimensiones de cóndilo. La inducción de OA por medio de MIA y papaína genera cambios en la dimensión del cóndilo mandibular de conejos observables a través de TCCB. Además, ambos inductores promueven signos compatibles con OA en las superficies articulares de la ATM, siendo que la MIA promueve cambios más expresivos.
Subject(s)
Animals , Male , Rabbits , Osteoarthritis/pathology , Temporomandibular Joint/pathology , Papain/toxicity , Cone-Beam Computed Tomography , Iodoacetates/toxicity , Osteoarthritis/chemically induced , Osteoarthritis/diagnostic imaging , Temporomandibular Joint/drug effects , Temporomandibular Joint/diagnostic imagingABSTRACT
Introdução: além de amplamente utilizada na área odontológica Recebido em: 06/01/2018 para avaliação de tratamentos ortodônticos e para planejamento de cirurgias, a Tomografia Computadorizada de Feixe Cônico tem ganhado espaço também na literatura médica para avaliação das vias aéreas superiores. Isto porque as imagens tridimensionais da TCFC permitem a avaliação das áreas seccionais e volumes do espaço aéreo faríngeo. Objetivo: demonstrar, por meio de revisão da literatura, os efeitos da cirurgia ortognática sobre as vias aéreas superiores, avaliados por meio de tomografia computadorizada de feixe cônico (TCFC) e sua relação com a AOS. Material e Método: foi realizada uma busca nas bases de dados Lilacs e Pubmed utilizando como palavras-chave: tomografia computadorizada de feixe cônico, apneia do sono e cirurgia ortognática. Foram incluídos artigos nos idiomas português e inglês, sem limitação temporal, que tinham como principal foco avaliar as mudanças na via aérea superior após a cirurgia ortognática por meio de TCFC. Resultados: ao todo foram encontrados 11 artigos, dos quais 5 atenderam os critérios de inclusão e foram, portanto, analisados. Observou-se que: 3 artigos realizaram cirurgia bimaxilar e, neles, os resultados mostraram que não houve alteração da via aérea total após a cirurgia; 1 utilizou a técnica de retroposicionamento mandibular e observou que, após a cirurgia, houve diminuição significativa do volume total da via aérea e do seu segmento hipofaríngeo, bem como redução da área seccional faríngea mínima; 2 realizaram cirurgia de avanço maxilar que levou ao aumento significativo do volume da via aérea superior em ambos; 1 realizou cirurgia de avanço maxilomandibular que levou ao aumento significativo do espaço aéreo posterior. Conclusão: os resultados da presente revisão de literatura mostraram que a cirurgia ortognática levou a alterações da dimensão da via aérea superior na maior parte dos estudos analisados, a depender da técnica utilizada, que não se relacionou com a ocorrência de sintomas respiratórios ou AOS.
Introduction: in addition to being widely used in the dental area, for the evaluation of orthodontic treatments and for the planning of surgeries, Cone-Beam Computed Tomography has also gained space in the medical literature for evaluation of the upper airways. This is because the three-dimensional images of the CBCT allow the evaluation of the sectional areas and volumes of the pharyngeal space. Objective: to demonstrate, through a literature review, the effects of orthognathic surgery on the upper airways, by means of cone-beam computed tomography (CBCT), and its relationship with OSA. Material and Method: a search was carried out at Bireme and Pubmed databases using the following keywords: CBCT, sleep apnea and orthognathic surgery. Articles with the main focus of evaluating changes in the upper airway after an orthognathic surgery by means of CBCT was included in the study. Results: A total of 11 articles were found, of which 5 met the inclusion criteria and were, therefore, analyzed. It was observed that: in 3 studies bimaxillary surgery was performed and the results showed that there was no alteration of the total airway after surgery; 1 used the mandibular setback technique and observed that, after surgery, there was a significant decrease in the total volume of the airway and its hypopharyngeal segment, as well as reduction of the minimal pharyngeal cross-sectional area; in 2 maxillary advancement surgery was performed, which led to a significant increase in upper airway volume; 1 performed maxillomandibular advancement surgery, which led to a significant increase in posterior airway space. Conclusion: the results of the present literature review showed that orthognathic surgery led to alterations in the size of the upper airway in most of the studies analyzed, depending on the technique used. These alterations were not related to the occurrence of respiratory symptoms or OSA.
Subject(s)
Cone-Beam Computed Tomography , Sleep Apnea, ObstructiveABSTRACT
PURPOSE: The aim of this study was to evaluate the interdental distances of anterior, premolar, and molar teeth at the cementoenamel junction (CEJ) and 2 mm below the CEJ in healthy natural dentition with cone-beam computerized tomography (cone-beam CT) in order to provide valuable data for ideal implant positioning relative to mesiodistal bone dimensions. MATERIALS AND METHODS: Two hundred patients who visited Dental Hospital, Wonkwang University, who had natural dentition with healthy interdental papillae, and who underwent cone-beam CT were selected. The cone-beam CT images were converted to digital imaging and communication in medicine (DICOM) files and reconstructed in three-dimensional images. To standardize the cone-beam CT images, head reorientation was performed. All of the measurements were determined on the reconstructed panoramic images by three professionally trained dentists. RESULTS: At the CEJ, the mean maxillary interdental distances were 1.84 mm (anterior teeth), 2.07 mm (premolar), and 2.08 mm (molar), and the mean mandibular interproximal distances were 1.55 mm (anterior teeth), 2.20 mm (premolar), and 2.36 mm (molar). At 2mm below the CEJ, the mean maxillary interdental distances were 2.19 mm (anterior teeth), 2.51 mm (premolar), and 2.60 mm (molar), and the mean mandibular interproximal distances were 1.86 mm (anterior teeth), 2.53 mm (premolar), and 3.01 mm (molar). CONCLUSION: The interdental distances in the natural dentition were larger at the posterior teeth than at the anterior teeth and also at 2 mm below the CEJ level compared with at the CEJ level. The distances between mandibular incisors were the narrowest and the distances between mandibular molars were the widest in the entire dentition.
Subject(s)
Humans , Bicuspid , Cone-Beam Computed Tomography , Dentists , Dentition , Gingiva , Head , Imaging, Three-Dimensional , Incisor , Molar , Tooth Cervix , ToothABSTRACT
O objetivo deste trabalho foi descrever a técnica de DDI (desenho digital integral) em substituição ao ED (enceramento diagnóstico), mudando um paradigma na Odontologia. Com o uso do DDI, não é necessário realizar o enceramento diagnóstico para estabelecer a meta protética. Esta é obtida digitalmente em um ambiente 3D, com mais requinte de informações e maior precisão. O DDI é então materializado (prototipado) utilizando uma impressora 3D, dentro do ambiente do consultório. Atualmente, os recursos CAD/CAM de baixo custo estão disponíveis para uso odontológico, e os resultados obtidos com esta tecnologia justificam a incorporação do tratamento 3D. Desta forma, a técnica do enceramento dental estaria próxima do fim, sendo que, em um futuro próximo, dentistas/técnicos de prótese serão dental digital designers e todo o conhecimento se voltará para o domínio dos programas de informática, e não para aquisição de equipamentos complexos e de alto custo.
The objective of this study was to describe the IDD technique (integrated digital design) to replace the DW (diagnostic waxing) as a paradigm shift in Dentistry. In this way, it is not necessary to perform the diagnostic waxing to establish the prosthetic outcomes. This is achieved in a 3D environment, with more information refi nement and greater accuracy. The IDD is then materialized (prototyped) using a 3D printer within the dental offi ce. Currently, the CAD/CAM resources are low-cost and available for dental use, with the obtained results justifying the incorporation of the 3D dental treatment. Thus, the diagnostic waxing would be close to an end; in the near future, clinicians/laboratory technicians will be dental digital designers and all knowledge will be managed to computer software domain and not to the acquisition of complex and expensive production equipment.
Subject(s)
Humans , Male , Aged , Computer-Aided Design , Cone-Beam Computed Tomography , Imaging, Three-Dimensional , Printing, Three-Dimensional , Technology, DentalABSTRACT
Objetivo. Estudiar la morfología y morfometría del agujero mentoniano mediante tomografía ConeBeam en pacientes adultos dentados Metodología. Estudio descriptivo transversal. Se estudiaron 180 tomografías ConeBeam analizando la distancia de la cortical superior e inferior del agujero mentoniano hasta la cresta alveolar y la basal mandibular respectivamente, así como la ubicación, forma, tamaño y presencia de agujeros accesorios. Resultados. Se encontró que la media respecto de la cortical superior a la cresta alveolar fue de 15.00 mm y la media respecto de la cortical inferior a la basal mandibular de 13.75 mm. La ubicación más frecuente se apreció en el eje longitudinal del segundo premolar (44.4% en el lado derecho y 47.2% en el lado izquierdo). La forma predominante fue la oval y el tamaño se ubicó en el rango de 2 mm a 2.99mm. Los agujeros accesorios estuvieron presentes en 55.5% de los casos. Conclusión. El conocimiento exacto de la ubicación del agujero mentoniano y sus variaciones, ayuda a una correcta planificación para los procedimientos quirúrgicos, y a una eficaz colocación de anestesia, evitando daños al paquete vasculonervioso.
Objective. To study the morphology and morphometry of the mental foramen using cone-beam CT in dentate adult patients. Methods. Transversal descriptive study in which 180 cone-beam CTs were studied to analyze the distance between the upper and lower cortical areas of the mental foramen to the alveolar crest and the mandibular basal bone respectively, as well as the location, shape, size and presence of accessory holes. Results. It was found that the mean of the upper cortical area in relation to the alveolar crest was 15.00 mm and the mean of the lower cortical area to the mandibular basal bone was 13.75 mm. The most frequent location was the longitudinal axis of the second premolar (44.4% right side and 47.2% left side). The predominant shape was oval and the size was in the range of 2.00 mm to 2.99 mm. Accessory holes were present in 55.5% of cases. Conclusion. Knowing the exact location of the mental foramen and its variations helps to properly plan surgical procedures and to administer anesthesia effectively without damaging the neurovascular bundle.
Subject(s)
Cone-Beam Computed Tomography , Mandible , Mandible/anatomy & histologyABSTRACT
Objective:To analyse the asymmetry of mandibular of adults with skeletal classⅢmalocclusion and mandibular deviation using cone-beam computerized tomography(CBCT).Methods:20 adults with skeletal classⅢmalocclusion and mandibular deviation (deviation group)and 20 adults with individual normal occlusion(normal group)were included.CBCT slices were taken for each sub-ject.INVIVO 5 software was used to make 3D reconstruction and location marks for line distance and volume measurements of mandi-ble and condyle.Results:The measurements of the mandibular ramus length,mandibular total length,hemi-mandibular volume, mandibular ramus volume,posterior part of mandibular body length,condylar unit length,angular unit length,body unit length and an-gular angle in deviation group were significantly different between 2 sides(P<0.05).Compared with the normal group,differences of the asymmetry of mandibular ramus length,mandibular total length,hemi-mandibular volume,mandibular ramus volume,posterior part of mandibular body length,angular angle,condylar unit length and body unit length between 2 sides in deviation group were sig-nificantly different(P<0.05).Conclusion:In adults with skeletal classⅢmalocclusion and mandibular deviation deviated condylar and mandibular ramus are smaller than those of the nondeviated;the posterior part of mandibular body is slightly asymmetric while the anterior part of mandibular body is almost symmetric.
ABSTRACT
Objetivo - O uso da tomografia computadorizada de feixe-cônico (CBCT) é útil para avaliar a densidade mandibular durante o planejamento de implantes. Métodos - Os autores utilizaram a escala de cinza para mensurar os valores de densidade de cinco regiões: linha mediana,pré-molares direito/esquerdo e molares direito/esquerdo. Utilizaram cinquenta cortes transaxiais obtidos de dez mulheres (de 40 a 49 anosde idade) examinadas em um aparelho Newtom 3G. Resultados - Os valores de densidade para molares foram mais altos do que os da linha mediana. As regiões de pré-molares apresentaram os valores mais baixos. Não houve diferenças estatisticamente significantes entre os lados (nível de 5%). Conclusões - Outros estudos devem ser desenvolvidos para avaliar estes achados iniciais utilizando diferentes equipamentos de CBCT e grupos de pacientes.
Objective - The use of cone beam computerized tomography (CBCT) is useful to evaluate the mandibular density during the implants planning. Methods - The authors had used the gray scale to measure density values from five different regions: midline, right and left premolars and, right and left molars. They used fifty transaxials tomograms assessed from ten women (from 40 to 49 years-old) scanned on a Newtom 3G unit. Results - The density values to molars were higher then to midline. Premolars regions had presented the lowest values. There are no statistically significant differences between sides (level of 5%). Conclusions - Others studies must be developed to evaluate these initialfindings applying different CBCT machines and groups of patients.