Impact of Temporomandibular Disorders and Sleep Bruxism on Oral Health-Related Quality of Life of Individuals With Complete Cleft Lip and Palate.

The temporomandibular disorders (TMDs) and sleep bruxism (SB) affect the quality of life (QoL) of the individuals in general. However, the literature lacks studies on individuals with cleft lip and palate (CLP). Thus, this study aimed to evaluate the impact of TMD and SB on the oral health-related quality of life (OHRQoL) of individuals with CLP. Thirty-six individuals, both genders, aged between 30 and 50 years, at routine treatment in the Dental Prosthesis Sector of Hospital for Rehabilitation of Craniofacial Anomalies-University of São Paulo were selected and divided into the following groups: G1-unilateral complete CLP (n = 22) and G2-bilateral complete CLP (n = 14). Three questionnaires were applied: Oral Health Impact Profile (OHIP-14), SB self-report and Research Diagnosis Criteria for TMD. Fisher test, Mann-Whitney test, and t test were applied to verify values between TMD, SB, gender, and OHIP-14 (P < 0.05). The mean OHIP-14 score was of 5.80, and females had higher (8.58) OHRQoL than males (3.31). There was association with gender and OHRQoL (t test, P = 0.006), TMD with OHRQoL (Mann-Whitney test, P = 0.036), and TMD and SB (Fisher test, P = 0.006). Temporomandibular disorder was diagnosed in 30% of the individuals. Of these, 16.66% did not present SB, while 13.88% presented it. The association TMD versus SB showed statistically significant differences and 83.33% of the individuals reporting SB also had TMD. Based on this study, the authors can conclude that: TMD impacts OHRQoL in CLP patients, females are more affected in their OHRQoL than males, SB was strongly associated with TMD.

Delayed tooth reimplantation with 4-year follow-up: the management of ankylosis during facial growth.

This case report describes the consequences of delayed (24 hours) reimplantation of an avulsed maxillary central incisor, findings over a 4-year follow-up period, and the management of ankylosis during facial growth. After a traumatic event, a 10-year-old boy was taken to a hospital emergency department due to injuries to his face, including avulsion of the maxillary left central incisor. Despite the short amount of time before arriving at the hospital (10 minutes) and use of the correct storage medium (milk), the tooth was not reimplanted, and the parents did not receive instructions to seek dental treatment. The next day, the child was brought to a dental school because he objected to the loss of his tooth. The treatment chosen was delayed tooth reimplantation. At the 1-year follow-up, the reimplanted tooth was infraoccluded, and periapical radiography revealed signs of ankylosis and initial replacement root resorption. At the 2- and 3-year follow-up examinations, resorption and infraocclusion of the central incisor had progressed. In this case, the delayed reimplantation resulted in ankylosis that had a significant clinical impact due to the patient's facial growth. Direct resin restoration of the reimplanted tooth was therefore performed 3 years after trauma. Despite continued resorption and infraocclusion of the tooth observed 4 years posttrauma, the esthetic, low-cost treatment was well accepted, and the patient's quality of life was improved until definitive treatment can be performed.

Influence of mandibular and palatal intraoral appliances on erosion in situ study outcome.

OBJECTIVE: The standardization of in situ protocols for dental erosion is important to enable comparison between studies.Thus, the objectives of this study were to evaluate the influence of the location of in situ intraoral appliance (mandibular X palatal) on the extent of enamel loss induced by erosive challenges and to evaluate the comfort of the appliances. MATERIAL AND METHODS: One hundred and sixty bovine enamel blocks were selected according to their initial surface hardness and randomly divided into two groups: GI - palatal appliance and GII - mandibular appliance. Twenty volunteers wore simultaneously one palatal appliance (containing 4 enamel blocks) and two mandibular appliances (each one containing 2 enamel blocks). Four times per day during 5 days, the volunteers immersed their appliances in 0.01 M hydrochloric acid for 2 minutes, washed and reinserted them into the oral cavity for 2 hours until the next erosive challenge. After the end of the in situ phase, the volunteers answered a questionnaire regarding the comfort of the appliances. The loss of tissue in the enamel blocks was determined profilometrically. Data were statistically analyzed by paired t-test, Chi-square and Fisher's Exact Test (p<0.05). RESULTS: The enamel blocks allocated in palatal appliances (GI) presented significantly higher erosive wear when compared to the blocks fixed in mandibular appliances (GII). The volunteers reported more comfort when using the palatal appliance. CONCLUSIONS: Therefore, the palatal appliance is more comfortable and resulted in higher enamel loss compared to the mandibular one.

Effect of palm oil alone or associated to stannous solution on enamel erosive-abrasive wear: A randomized in situ/ex vivo study.

OBJECTIVE: Palm oil has demonstrated preventive potential against initial erosive demineralization in vitro. This in situ study evaluated the effect of palm oil alone or associated with stannous-containing (Sn) solution on preventing enamel loss from an erosive/abrasive challenge. DESIGN: This single-blind, randomized, crossover in situ/ex vivo study was developed in four phases (one per group of five days) with sixteen volunteers. Enamel blocks (n = 256) were allocated to groups according to the treatment: Palm oil; Palm oil plus Sn solution; Sn solution - positive control; and Deionized water - negative control. Half of the enamel blocks of each group was subjected to erosion and the other half to erosion + abrasion. The daily ex vivo protocol consisted of four citric acid immersions (2 min). Before the first and third acid exposure, the blocks were treated with the test solutions (1 drop/block) for 1 min followed by acid immersion and abrasive challenge (toothpaste was applied on all blocks and half were brushed for 15 s/block). Enamel loss was quantified profilometrically and data were analyzed by two-way ANOVA and Tukey's test (p < 0.05). RESULTS: A significant difference was found for type of treatment (p < 0.001); wear condition (p = 0.38) and the treatment x condition interaction (p = 0.33) was non-significant. Palm oil associated or not to Sn solution significantly reduced enamel wear in comparison with the negative control but did not differ from the positive control (p > 0.05). CONCLUSIONS: Palm oil was able to prevent enamel loss under erosive and erosive + abrasive challenges in a similar extend to stannous-containing commercial solution.

Effects of mineral trioxide aggregate, BiodentineTM and calcium hydroxide on viability, proliferation, migration and differentiation of stem cells from human exfoliated deciduous teeth.

The aim of the study was to evaluate the effects of the capping materials mineral trioxide aggregate (MTA), calcium hydroxide (CH) and BiodentineTM (BD) on stem cells from human exfoliated deciduous teeth (SHED) in vitro. SHED were cultured for 1 - 7 days in medium conditioned by incubation with MTA, BD or CH (1 mg/mL), and tested for viability (MTT assay) and proliferation (SRB assay). Also, the migration of serum-starved SHED towards conditioned media was assayed in companion plates, with 8 µm-pore-sized membranes, for 24 h. Gene expression of dentin matrix protein-1 (DMP-1) was evaluated by reverse-transcription polymerase chain reaction. Regular culture medium with 10% FBS (without conditioning) and culture medium supplemented with 20% FBS were used as controls. MTA, CH and BD conditioned media maintained cell viability and allowed continuous SHED proliferation, with CH conditioned medium causing the highest positive effect on proliferation at the end of the treatment period (compared with BD and MTA) (p<0.05). In contrast, we observed increased SHED migration towards BD and MTA conditioned media (compared with CH) (p<0.05). A greater amount of DMP-1 gene was expressed in MTA group compared with the other groups from day 7 up to day 21. Our results show that the three capping materials are biocompatible, maintain viability and stimulate proliferation, migration and differentiation in a key dental stem cell population.

Effects of mineral trioxide aggregate, BiodentineTM and calcium hydroxide on viability, proliferation, migration and differentiation of stem cells from human exfoliated deciduous teeth

Abstract Objective: The aim of the study was to evaluate the effects of the capping materials mineral trioxide aggregate (MTA), calcium hydroxide (CH) and BiodentineTM (BD) on stem cells from human exfoliated deciduous teeth (SHED) in vitro. Material and Methods: SHED were cultured for 1 - 7 days in medium conditioned by incubation with MTA, BD or CH (1 mg/mL), and tested for viability (MTT assay) and proliferation (SRB assay). Also, the migration of serum-starved SHED towards conditioned media was assayed in companion plates, with 8 μm-pore-sized membranes, for 24 h. Gene expression of dentin matrix protein-1 (DMP-1) was evaluated by reverse-transcription polymerase chain reaction. Regular culture medium with 10% FBS (without conditioning) and culture medium supplemented with 20% FBS were used as controls. Results: MTA, CH and BD conditioned media maintained cell viability and allowed continuous SHED proliferation, with CH conditioned medium causing the highest positive effect on proliferation at the end of the treatment period (compared with BD and MTA) (p<0.05). In contrast, we observed increased SHED migration towards BD and MTA conditioned media (compared with CH) (p<0.05). A greater amount of DMP-1 gene was expressed in MTA group compared with the other groups from day 7 up to day 21. Conclusion: Our results show that the three capping materials are biocompatible, maintain viability and stimulate proliferation, migration and differentiation in a key dental stem cell population.

Pit and Fissure Sealants with Different Materials: Resin Based x Glass Ionomer Cement ­ Results after Six Months

Objective: To compare the retention and superficial characteristics between a new resin-modified glass ionomer sealant and resin sealant. In addition, the teeth sealed were compared to partially erupted first molars (control group) without sealing in relation to the incidence of dental caries. Material and Methods: Initially, 31 children aged 6-8 years participated in this study. The study children showed caries history, but had at least two healthy first molars. A total of 114 teeth were randomly divided into three groups: Clinpro (n=36), Fluroshield (n=38), and control (n=40). The two sealants were applied under relative isolation after previous prophylaxis and enamel etching with phosphoric acid 35% (15s). Clinical evaluation was performed by two calibrated examiners. They evaluated the retention and surface characteristics of the occlusal surface. Results: Fluroshield® showed significantly greater retention than ClinproTM Varnish® XT (p=0.002). However, the performance analysis of the success and failure of retention presented no significant difference between the materials (p=0.141). Concerning to the surface characteristics, Fluroshield performed better than Clinpro after analyzing the marginal deterioration, marginal discoloration, and superficial discoloration (p<0.05). The surface texture of the materials under study was similar (p=0.071). Sealed groups (Clinpro=Fluroshield) showed similar performance in the prevention of dental caries, which was significantly lower than that of control group (p=0.001). Conclusion: Both sealants, Fluroshield® and Clinpro TM Varnish® XT were effective in preventing caries lesion within 6 months, although Fluroshield sealant showed better clinical retention.

Relação entre tempo de aleitamento materno, hábitos bucais deletérios e cárie dentária em bebês / The relationship between breastfeeding duration, deleterious oral habits, and dental caries in babies

A associação entre amamentação materna e cárie dentária é controversa. O presente estudo avaliou a experiência de cárie dentária entre bebês exclusivamente amamentados pelo seio materno ou pelo uso complementar de métodos artificiais auxiliares. Dados demográficos, valores do índice ceod, tempo de aleitamento materno e diagnóstico de hábitos bucais deletérios de sucção foram coletados dos prontuários clínicos-odontológicos de 299 bebês. Valores de P < 0,05 foram considerados para diferenças estatisticamente significantes. Os resultados demonstraram um significativo aumento da experiência de cárie dentária entre os bebês amamentados exclusivamente pelo seio materno. A média do tempo de aleitamento materno foi maior entre bebês com diagnóstico de cárie precoce da infância (CPI) (14,7±8,7 meses) quando comparado com bebês sem diagnóstico de CPI (8,3±6,8 meses) (P<0,001). Entretanto, bebês que desenvolveram hábitos bucais deletérios foram amamentados por menos tempo. O aleitamento materno deve ser estimulado, pois é capaz de prevenir infecções, mortalidade infantil, respiração bucal e hábitos bucais deletérios, além de favorecer o estabelecimento do vínculo emocional entre mãe e flho. Entretanto, o maior risco de lesões de cárie dentária deve determinar atenção especial da equipe de saúde da família em relação à manutenção das condições adequadas da saúde bucal dos bebês

The association between breastfeeding and dental caries is controversial. This study aimed to evaluate the experience of dental caries among exclusively breastfed infants and non-exclusively breastfed infants. Demographic data, dmft index scores, breastfeeding duration, and diagnosis of deleterious oral sucking habits were collected from 299 patient records of the Clinic of Babies of Cuiabá School of Dentistry. Statistical differences were considered to be signifcant with P values < 0.05. The results demonstrated a signifcant increase of experience of dental caries among exclusively breastfed infants. The mean of breastfeeding duration in infants with early childhood caries (ECC) diagnosis (14,7±8,7 months) was higher than those infants without ECC diagnosis (8,3±6,8 months) (P<0,001). The breastfeeding needs to be continuously estimulated because it prevents infections, infant mortality, oral breathing, deleterious oral sucking habits, besides favoring the maternal bonding. Higher risks of dental caries lesions among infants breastfed for longer, however, must lead family health teams to a special focus on the maintenance of good conditions of infants' oral health

Impact of Saliva and Intraoral Appliance on Erosion Lesions Rehardening Ability - A Pilot Study

Objective: To evaluate the ability of different periods of salivary exposure and two different removable appliances to rehardening initial erosive lesions. Material and Methods: This randomized, single blind in situ study was conducted with 2 crossover phases. The factors under study were: period of salivary exposure (15 minutes, 30 minutes, 1 hour and 2 hours) and type of oral appliance (maxillary or mandibular). Two hundred enamel blocks were selected by initial surface hardness (SHi). Enamel blocks were demineralized in vitro (0.05M citric acid; pH2.5 for 15 seconds), surface hardness (SHd) was remeasured and 160 blocks were selected and randomized among groups. Thus, there were 2 blocks per period of salivary exposure in each type of oral appliance for each one of the 10 volunteers. In each phase, one of the removable appliances was tested. The response variable was percentage of surface hardness recovery (%SHR=[(SHf-SHd)/SHi)]x100). Two-way ANOVA and Tukey's post hoc test were applied adopting 5% of significance. Results: No difference was found among oral appliances on enamel rehardening (p>0.01). Salivary exposure of 2 hours promoted similar enamel rehardening when compared to 1 hour (p>0.05), which showed similar rehardening to 30 min. All mentioned period of salivary exposure promoted superior rehardening than 15 min (p>0.01). Conclusion: The salivary time exposure between erosive attacks might be 2 hours to achieve a feasible maximum rehardening. In addition, both maxillary and the mandibular appliance have presented a similar rehardening ability.

Rare case of bilateral gemination in deciduous teeth / Un caso infrecuente de geminación bilateral en dientes temporales

Gemination in bilateral mandibular primary teeth is a rare anomaly. This kind of anomaly features two crowns totally or partially separated, but only one root and one root canal. At intraoral clinical examination of children we found different anatomy of mandibular primary canines with two partially separated crowns. The radiographic exams showed geminated teeth. After 3-years of follow-up, the cone beam computed tomography showed the absence of the mandibular permanent lateral incisors and the aspect of normality of the permanent canines germs. Although the gemination in primary teeth itself is considered as a harmless anomaly, its presence could indicate the occurrence of some dental anomaly in the permanent dentition. To the best of our knowledge, this is the only case of bilateral mandibular geminated deciduous teeth after 3 years of follow-up. Therefore, we highlight the importance of the early diagnosis and follow-up of this anomaly until the eruption of the permanent dentition.

La geminación dientes temporales mandibulares bilateralmente es una anomalía poco frecuente. Este tipo de anomalía presenta dos coronas total o parcialmente separadas, pero solo una raíz y un canal radicular. Al examen clínico intraoral de los niños encontramos la variación anatómica de los caninos temporales mandibulares con dos coronas parcialmente separadas. Los exámenes radiográficos mostraron los dientes geminados. Después de 3 años de seguimiento, la tomografía computarizada Cone-Beam mostró la agenesia de los incisivos laterales permanentes mandibulares y el aspecto de normalidad de los gérmenes de los caninos permanentes. Aunque la geminación en dientes primarios se considera como una anomalía no patológica, su presencia puede indicar la presencia de alguna anomalía dental en la dentición permanente. Según nuestro nuestro conocimiento, este es el único caso de dientes temporales geminados mandibulares bilateralmente tras 3 años de seguimiento. Se destaca la importancia del diagnóstico precoz y el seguimiento de esta anomalía hasta la erupción de la dentición permanente.

Surgical excision of mucocele with local anesthesia in an 8-month-old baby / Excisão cirúrgica de mucocele sob anestesia local em um bebê de 8 meses de idade

Mucoceles are common disorders of the minor salivary glands, occurring specially on the lower lip. Their occurrence in newborn babies has rarely been reported. In addition, the surgical removal of oral lesions in babies has often been performed with general anesthesia, which option is usually related to the patients' ages, irrespective of the lesion's size and the access to anatomic region where it is located. The present report, however, details the treatment of a mucocele excision performed in an 8-month-old baby with local anesthesia. This case illustrates well that knowledge of the lesion and dentist's experience in the attendance of babies is important, as often only conservative treatment with local anesthesia is required. Therefore, clinicians and parents should be reassured that early surgical intervention under local anesthesia will provide a swift and satisfactory resolution to the problem.

Mucocele é uma ocorrência comum nas glândulas salivares menores, que acontece, principalmente, no lábio inferior. Em bebês, tem sido raramente reportada na literatura. Em adição, a remoção cirúrgica de lesões orais em bebês tem sido realizada sob anestesia geral, cuja opção geralmente se refere à idade do paciente, sem ter relação com o tamanho da lesão e o acesso à região anatômica onde está localizada. O presente caso clínico, no entanto, descreve a excisão da mucocele realizada em um bebê de 8 meses de idade, sob anestesia local. Esse caso ilustra bem que o conhecimento da lesão e a experiência do dentista no atendimento de bebês é muito importante, já que somente um tratamento conservador sob anestesia local é necessário. Portanto, clínicos e pais devem ser alertados para o fato de que uma intervenção cirúrgica precoce sob anestesia local irá proporcionar uma resolução rápida e satisfatória do problema.

Importância dos programas de educação e motivação para saúde bucal em escolas: relato de experiência / Importance of education and motivation programs for oral health in schools: experience report

Atualmente, os esforços da odontologia encontram-se voltados, principalmente, para a prevenção das doenças bucais. Ademais, destaca-se a necessidade de ensinar e motivar hábitos de higiene bucal às crianças. Os métodos de educação e motivação têm a finalidade de esclarecer os pacientes sobre as doenças bucais e mudar seus hábitos de higiene. O objetivo deste trabalho foi o de descrever um programa de educação e motivação para crianças em relação à saúde bucal em escolas. Para o sucesso deste trabalho, as inovações nas atividades propostas no programa dependem da habilidade do profissional. Portanto, o desenvolvimento de programas de educação e motivação para saúde bucal em escolas são indispensáveis para a busca de uma saúde bucal plena.

Nowadays, the eff orts of dentistry aimed mainly at prevention of oral diseases. In addition it's important to teach and encourage oral hygiene to children. The methods of education and motivation are intended to clarify the patients about oral diseases and to change their hygiene habits. The aim of this study was to describe an education and a motivation program for children regarding oral health in schools. In order for this work to succeed, the inovations proposed in the program depend on the professional skills. Therefore, the development of education and motivation programs for oral health in schools is essential to the pursuit of a full oral health.

Tomografa computadorizada cone beam e radiografa periapical como métodos de proservação de lesões periapicais em pacientes com fissura labiopalatina / Cone-beam computed tomography and periapical radiograph as follow-up methods of periapical lesions in cleft patients

Introdução: o objetivo do presente estudo foi comparar a eficácia da Tomografa Computadorizada Cone Beam (TCCB) e da radiografa periapical como métodos de acompanhamento de lesões periapicais, após o tratamento endodôntico em pacientes com fissura labiopalatina. Métodos: imagens radiográfcas periapicais (Grupo I) e de TCCB (Grupo II), de 46 dentes unirradiculares com lesões periapicais, em pacientes com fissura labiopalatina, foram avaliadas. Esses pacientes foram encaminhados ao Departamento de Endodontia do Hospital de Reabilitação de Anomalias Craniofacias – Universidade de São Paulo (HRAC-USP) para tratamento endodôntico, retornando para o acompanhamento depois de seis meses a dois anos. Para avaliações, foi utilizado o índice periapical. A reprodutibilidade intraexaminador foi determinada por meio do teste kappa e os dados foram analisados por meio do teste de Wilcoxon (p < 0,05). Resultados: no Grupo I, 27 dentes apresentaram escore 1 (58,7%); 10 dentes, escore 2 (21,7%); 7 dentes, escore 3 (15,2%); 1 dente teve escore 4 (2,2%) e 1 dente teve escore 5 (2,2%). No Grupo II, 7 dentes apresentaram escore 1 (15,2%); 8 dentes, escore 2 (17,4%); 18 dentes, escore 3 (39,1%); 10 dentes, escore 4 (21,7%) e 3 dentes, escore 5 (6,6%). Houve diferença estatisticamente signifcativa entre os grupos estudados. Os escores, avaliados nos mesmos dentes, foram maiores na TCCB do que nas radiografas. Conclusão: a TCCB é mais eficaz do que a radiografa periapical para o acompanhamento de lesões periapicais, após o tratamento endodôntico, em pacientes com fissura labiopalatina.

A Ortodontia parcial como alternativa no tratamento em adultos / Limited orthodontics as an alternative to treatment in adults

O tratamento ortodôntico tradicional tem sido recebido por alguns adultos com insatisfação, devido ao longo tempo necessário para a correção da má-oclusão. O tratamento parcial tem sido sugerido para resolver esta questão, entretanto, os objetivos deste tratamento mudam e se tornam mais direcionados. O presente trabalho investigou os benefícios causados pelo tratamento ortodôntico parcial por meio da apresentação de um caso clínico.

The traditional orthodontic treatment has been received by some adults with dissatisfaction due to the long time required for correction of malocclusion. Limited treatment has been suggested to solve this issue, however the goals of this treatment change and become more objectives. This study investigates the benefits caused by the limited orthodontic treatment through a clinical case.

Tracionamento ortodôntico-cirúrgico de incisivo superior impactado associado a odontoma: relato de caso clínico / Surgical-orthodontic traction of an impacted maxillary incisor associated with odontoma: a case report

A impacção de incisivos superiores na fase de dentição mista, além de ser um desafio clínico, é uma má oclusão que preocupa os pais e as crianças, haja vista que afeta a estética do sorriso. Nesses casos, o diagnóstico precoce e o tratamento adequado são importantes para a melhor resolução do problema, tanto do ponto de vista funcional quanto psicológico. Um dos fatores etiológicos da impacção dentária é a presença de odontoma no trajeto de erupção do dente permanente. O tratamento ortodôntico-cirúrgico dessa má oclusão promove a erupção, posicionamento e estabilização do dente retido, além da remoção da patologia. Dessa maneira, o objetivo do presente estudo é apresentar um relato de caso clínico da remoção cirúrgica de odontoma e tracionamento do incisivo retido, com a utilização de aparelho ortodôntico removível. O aparelho foi utilizado de início para proporcionar abertura de espaço necessária à erupção do dente retido, sendo, depois, utilizado para tracioná-lo e posicioná-lo adequadamente na arcada. Os procedimentos adotados mostraram-se uma alternativa eficiente para o tratamento de dentes impactados, além de apresentarem baixo custo e boa aplicabilidade.

Relação entre nível de escolaridade de mães e percepção sobre saúde bucal de bebês / Association between the educational background of moters and their knowledge on oral health of babies

Neste estudo avaliou-se a percepção das mães em relação à saúde bucal de seus bebês, correlacionando com o nível de escolaridade das mesmas. A amostra foi constituída de setenta e oito mães que responderam um questionário que abordava os conhecimentos sobre saúde bucal. Os resultados mostraram correlação estatisticamente significante (teste de coeficiente de correlação de Spearman R=0,50) entre grau de conhecimento das mães sobre saúde bucal e nível de escolaridade. Concluiu-se que quanto maior o nível de escolaridade das mães, maior o conhecimento sobre saúde bucal e que há necessidade de maiores esclarecimentos destas mães sobre este assunto.

This study evaluated mothers’ perception about oral health of their babies and its correlation with mother's education levels. Seventy eight mothers completed a questionnaire enquiring their dental health knowledge. The results showed that mother's education levels influence the perception of their babie's oral heath, and that they do not have enough knowledge about the required procedures for children's health. It could be concluded that the lower the mother's education levels, the lower is the oral health perception. Therefore, dental professionals should provide mothers with more explanation regarding this subject.

Avaliação comparativa de dois métodos de análise da microinfiltração em dentes decíduos / Comparative assessment of two analysis methods for microleakage in primary teeth

O objetivo deste trabalho foi avaliar in vitro a microinfiltração de duas resinas compostas, dois cimentos de ionômero de vidro modificados por resina, duas resinas compostas modificadas por poliácidos e duas resinas compactáveis por meio de duas técnicas: medida linear em microscópio e análise computadorizada. A amostra experimental constituiu-se de quarenta primeiros molares decíduos divididos aleatoriamente em oito grupos iguais. Foram confeccionadas cavidades estritamente mesiais e distais em todos os dentes. Após o preparo, as cavidades foram restauradas com os materiais citados, sendo então procedido o acabamento e o polimento. Em seguida, foram realizados os procedimentos de termociclagem, penetração do corante e seccionamento. A microinfiltração foi medida pelas duas técnicas na margem cervical. Os resultados foram submetidos à análise pelos teste ANOVA e teste de Tukey. Observou-se, neste estudo, que nenhum dos materiais testados foi capaz de impedir completamente a microinfiltração e que não existiu diferença estatisticamente significante para os métodos de análise empregados: medida linear em microscópio e análise computadorizada.

The purpose of this study was to evaluate the microleakage of two composite resin, two resin modified glass ionomer cement, two polyacid modified composite resin and two condensable composite resins, through two techniques: optical microscopy and computer software. The experimental sample consisted of forty primary molars. The teeth were randomly divided in eight groups. Mesiais and distais cavities were prepared in all teeth. The specimens were restored with the materials listed above and polished. Soon after that, the specimes were thermocycled, immersed in dye and sectioned. The microleakage was measured by two techniques at the cervical margins. The results were submitted to the analysis by ANOVA and Tukey’s test. The results demonstrated that none of the tested materials was capable to impede the microleakage completely and there was no significant difference in relation to the two studied techniques, optical microscopy and computer software.

Tracionamento ortodôntico-cirúrgico de incisivo superior impactado / Surgical-orthodontic traction of impacted maxillary incisor

A impacção de dentes permanentes é um fator prejudicial, do ponto de vista estético e funcional, ao desenvolvimento da oclusão. O diagnóstico é realizado por meio de avaliação clínica e radiográfica, para localizar e estudar o posicionamento intraósseo dos dentes. O tracionamento ortodôntico é uma alternativa em casos de impacção dentária, e tem como finalidade redirecionar a trajetória de erupção, auxiliando — ou até substituindo — a força eruptiva do dente não irrompido. Portanto, o objetivo deste trabalho é relatar um caso clínico de um tracionamento ortodôntico-cirúrgico de um incisivo superior impactado, com trajeto ectópico de erupção. A conduta clínica realizada foi a recuperação de espaço na arcada dentária, seguida do tracionamento ortodôntico-cirúrgico. O diagnóstico precoce da impacção dentária permitiu prevenir a instalação de problemas oclusais, bem como o tratamento adequado levou à recuperação estética e funcional da oclusão.

Uso da tomografia computadorizada de feixe cônico em odontopediatria: relato de casos / Use of cone beam computed tomography in pediatric dentistry: case reports

Tomografia Computadorizada de Feixe Cônico é uma técnica de aquisição de imagens queoferece diversas vantagens na prática clínica odontológica por produzir imagens tridimensionais da região dentomaxilofacial. Em Odontopediatria, a avaliação de estruturas em diferentes planos é necessária especialmente em casos complexos, nos quais as radiografias convencionais não fornecem com exatidão informações importantes. O presente estudo tem como objetivo relatar três casos clínicos de diferentes alterações buco-dentárias em que a utilização da Tomografia Computadorizada de Feixe Cônico auxiliou na determinação de um correto diagnóstico e definição de um plano de tratamento adequado.

Cone Beam Computed Tomography is a technique that offers many advantages in dentistry because it produces three-dimensional imaging of the dentomaxillofacial structures. In pediatric dentistry, the need to evaluate structures in different planes is noticed especially in complex cases, in which conventional radiographs do not show, in an accurate way, some important information. Therefore, the purpose of this study is to report three cases of different alterations which the use of Cone Beam Computed Tomography helped us for correct diagnosis and adequate treatment planning.

Reconstrução de fratura coronária com resina composta reforçada com pino de fibra de vidro: relato de caso / Reconstruction of crown fracture with glass fiber-reinforced post and composite resin: case report

As fraturas coronárias são os traumatismos mais frequentes na dentição permamente e requerem tratamento funcional e estético. O objetivo deste trabalho é descrever um caso clínico do tratamento de fratura coronária complicada de um incisivo central inferior permanente em uma criança de 9 anos...

Crown fracture is the most frequent traumatic injury in the permanent dentition, and requires functional and esthetic treatment. the aim of this study was to report the reconstruction of a permanent mandibular central incisor crown fracture in a 9 years old boy...