Bone density and implant stability with advanced platelet-rich fibrin in immediately loaded- implant assisted mandibular overdentures / Densidade óssea e estabilidade dos implantes com fibrina rica em plaquetas avançada em overdentures mandibulares com carga imediata

ABSTRACT Objective: The aim of this study is to determine the effect of Advanced Platelet-Rich Fibrin on bone density and implant stability in immediately loaded- implant-assisted mandibular overdentures (Split-mouth study). Material and Methods: Ten completely edentulous patients received two implants in the mandibular canine region and locator attachments were used to retain immediately loaded- implant mandibular overdentures. Each patient served in two Groups, one Group for each side. One side of the mandible received an implant with topical application of Advanced Platelet-Rich Fibrin in the implant osteotomy site (Group I) and the other site received an implant without application of Advanced platelet-rich fibrin (Group II). Each patient was examined clinically for implant stability using Osstell Mentor device and radiographically by ultra-low dose CT scan to measure bone density around the implant at baseline, three, six months, and one year. Results: There were no statistically significant differences (P>.05) in bone density and implant stability among the studied Groups during one year follow-up period. Conclusion : Advanced Platelet-Rich Fibrin has no effect on bone density and implant stability in immediately loaded implant-assisted mandibular overdenture.(AU)

RESUMO Objetivo: O objetivo deste estudo é determinar o efeito da Fibrina Rica em Plaquetas Avançada na densidade óssea e estabilidade dos implantes em Overdentures mandibulares com carga imediata (estudo de boca dividida). Material e Métodos: Dez pacientes edêntulos foram submetidos à instalação de dois implantes mandibulares na região dos caninos e pilares locator foram utilizados como sistema de retenção para as overdentures mandibulares com carga imediata. Cada paciente participou nos dois grupos, sendo um grupo para cada lado. Um lado da mandíbula recebeu implante com aplicação tópica de Fibrina Rica em Plaquetas Avançada no local do sítio cirúrgico do implante (Grupo I) e o outro local recebeu implante sem aplicação de Fibrina Rica em Plaquetas Avançada (Grupo II). Cada paciente foi examinado clinicamente quanto à estabilidade do implante usando o dispositivo Osstell Mentor e radiograficamente por tomografia computadorizada de ultrabaixa dose para medir a densidade óssea ao redor do implante no início do estudo, três, seis meses e um ano. Resultados: Não houve diferenças estatisticamente significativas (P>0,05) na densidade óssea e na estabilidade do implante entre os grupos estudados durante o período de acompanhamento de um ano. Conclusão: A Fibrina Rica em Plaquetas Avançada não tem efeito na densidade óssea e na estabilidade de implantes em Overdentures mandibulares com carga imediata (AU)

Caracterización morfológica de caninos en premolares, un caso de anodoncia parcial de caninos maxilares / Morphological characterization of canine teeth done in first bicuspid, a maxillary canine partial anodontia case report

En este informe de caso clínico se muestra el tratamiento exitoso de un paciente con anodoncia parcial de órganos dentales 13 y 23 debido a que fueron extraídos por presentar impactación y mal pronóstico de tracción. En este artículo se presenta un paciente masculino de 29 años clase I esquelética con un perfil convexo, maloclusión de clase III, overjet disminuido, ausencia de guías funcionales, discrepancia oseodentaria positiva en arcada superior y negativa en arcada inferior. El tratamiento se realizó con extracciones de los órganos dentales 34 y 44 para nivelar las discrepancias óseo dentarias interarcadas, se llevó a cabo mediante un cierre de espacios recíproco por medio de cadenas elásticas para ambas arcadas, con lo que se logró crear un overjet y overbite adecuados. La creación de las guías caninas funcionales se consiguió mediante el cambio de morfología de los órganos dentales 14 y 24, los cuales fueron llevados a la posición de los caninos ausentes. El tiempo total de tratamiento para este paciente fue de 24 meses. Se realizaron ameloplastias positivas, la aplicación de agregados de resina para mejorar la funcionalidad y proveer salud articular. Se sugiere que ante casos de anodoncia de caninos en la arcada superior, un tratamiento favorable se puede llevar a cabo mediante el cierre de espacios, la caracterización morfológica de los caninos ausentes mediante ameloplastias positivas en premolares (AU)

This case report shows the successful treatment of a patient with partial anodontia of dental organs 13 and 23 because they have been extracted due to present impactation and poor traction prognosis. This article presents a 29-year-old male class I skeletal patient with convex profile, class III malocclusion, overjet reduction, absence of functional guidance, positive bone-teeth discrepancy in the upper arch and negative in the lower arch. The treatment was carried out with the extractions of the dental organs 34 and 44 for correcting oral dental discrepancies between upper and lower arches; it was done using reciprocal closing of spaces by using elastic chains for both arches in order to achieve a suitable overjet and overbite. The creation of the canine guides was achieved by changing the morphology of the dental organs 14 and 24, which were taken to the position of the absent canines. The total treatment timing for this patient was 24 months. Positive ameloplasties were performed by application of resin aggregates to improve functionality and provide joint health. A favorable treatment for these kinds of cases of canine anodontics in the upper arch is carried out by closing spaces and the morphological characterization of the absent canines by positive in-premolar ameloplasties (AU)

Impaction of mandibular canine associated with a dentigerous cyst: a 2. 5 - year follow-up report

Introduction: Dentigerous cyst is an odontogenic cyst lesion surrounding the crown of an unerupted or impacted tooth in the jaw. Objective: The aim of this case report is to describe the treatment planning and follow-up of a dentigerous cyst associated with the impaction of the permanent mandibular right canine tooth in an 11-year-old female. Case report: Radiographic assessment revealed a radiolucent unilocular round-shaped lesion localized in the mandibular symphysis. Enucleation was performed and the affected tooth was removed under general anesthesia. The patient is under follow-up due to orthodontic treatment. The affected area healed without complications. Conclusion: Two and a half years after the enucleation, the cyst had totally disappeared, and no recurrences were observed. Bone remodeling and neoformation were noticed.

Introdução: O cisto dentígero é uma lesão odontogênica ao redor da coroa de um dente não irrompido ou impactado na mandíbula. Objetivo: O objetivo deste relato de caso é descrever o plano do tratamento e o acompanhamento de um cisto dentígero associado à impactação do canino permanente inferior direito em uma criança do gênero feminino de 11 anos de idade. Relato do caso: A avaliação radiográfica revelou lesão unilocular radiolúcida de forma arredondada, localizada na sínfise mandibular. A enucleação foi realizada e o dente afetado foi removido sob anestesia geral. A paciente encontra-se em acompanhamento devido o tratamento ortodôntico. A área afetada curou sem complicações. Conclusão: Dois anos e meio após a enucleação, o cisto desapareceu totalmente e não houve recidivas. Remodelação óssea e neoformação foram observadas.

Bilateral canine space infection secondary to odontogenic origin: a rare case report

Odontogenic infections (OI) are a major reason for consultation in dental practice. They affect people of all ages, and most of them respond well to current medical and surgical treatments. The aim of this paper is to emphasize different and rare etiological factors that can play a role in odontogenic abscesses, which can lead to complications. A 54-year-old man complaints of pain and swelling on the upper front-side of his face. Physical examination of the face showed enlargement and swelling in the upper front region. Panoramic radiograph images showed a ra-diolucent appearance of the canine region. Based on the results of the clinical and radiographic examinations, the patient was diagnosed with a bilateral canine space infection. The treatment performed was FNAC (Fine neddle aspiration cytology) from canine region followed by intraoral drainage incision at the most prominent part of swelling (Modified Hiltons method), 5 ml of pus was removed, postoperative dressing was applied and regular follow-up was done with continued antibiotic therapy. Bilateral canine space abscess is a rare odontogenic infection that can cause life-threatening complications. The success of treatment requires early recognition, determination of etiological factors, and appropriate medical and surgical management. To per-form treatment of odontogenic infections, the Oral & Maxillofacial Surgeon should understand the terminology regarding infectious diseases and pathophysiology. The success of treatment requires early recognition, determination of etiological factors, and appropriate medical and surgical management.

Abordagem cirúrgica de canino impactado em região de mento / Canine surgical approach impacted in mento region

Os caninos maxilares e mandibulares são dentes importantes dos pontos de vista estético e funcional. Esses dentes são frequentemente mal posicionados, no entanto, a falha da irrupção do canino mandibular é pouco comum, sendo mais frequente a inclusão de caninos maxilares. Fatores como posicionamento dentário, anquiloses, cistos, idade do paciente, saúde periodontal, formação radicular, entre outros, direcionam o tratamento. Objetivo: reportar um caso clínico de um jovem com impactação dentária de um canino inferior direito, enfatizando e discutindo a técnica cirúrgica e o planejamento realizado. Relato de caso: paciente de 15 anos de idade, do gênero masculino, com a não erupção do canino inferior direito, ao exame clínico, apresentou ausência clínica do dente 43, persistência do dente 83. Foi solicitada uma tomografia computadorizada de feixe cônico (cone beam) da região, na qual se diagnosticou a presença do elemento dentário 43 em posição horizontal localizado no mento. O plano de tratamento proposto foi remoção cirúrgica do dente não irrompido. Considerações finais: a opção de tratamento de dentes não erupcionados dependente de fatores como rizogênese incompleta, idade do paciente e grau de inclusão, e as manobras referentes aos dentes envolvidos devem ser realizadas no momento mais oportuno e com adequado planejamento, evitando lesões nas estruturas nobres e permitindo, assim, um processo de reparo adequado.(AU)

Introduction: Maxillary and mandibular canines are important teeth from the aesthetic and functional points of view. These teeth are often poorly positioned but the eruption failure of the mandibular canine is uncommon, and the inclusion of maxillary canines occurs more frequently. Factors such as dental positioning, ankyloses, cysts, patient age, periodontal health, root formation, among others guide the treatment. Objective: To report a clinical case of a young man with tooth impaction of a right lower canine, emphasizing and discussing the surgical technique and planning performed. Case report: A 15-year-old male patient, with non-eruption of the right lower canine on the clinical examination, presented a clinical absence of tooth 43 and persistence of tooth 83. A cone-beam computed tomography was requested for the region in which the presence of dental element 43 was diagnosed, in the horizontal position located in the chin. The treatment plan proposed was surgical removal of the non-erupted tooth. Final considerations: The treatment option of non-erupted teeth depends on factors such as incomplete rhizogenesis, patient age, and degree of inclusion, and the teeth involved should be managed at the optimal time and with adequate planning, preventing injuries to noble structures, thus allowing an adequate repair process.(AU)

Intervenção cirúrgica de um canino incluso em sínfise mandibular: relato de caso / Surgical intervention of an unerupted canine in mandibular sinfisis: case report

Objetivo: relatar um caso de exodontia do dente 43, incluso, na região do mento, com o auxílio de um exame complementar eficaz e de baixo custo: radiografia lateral de mandíbula utilizando filme oclusal. Relato de caso: paciente do gênero masculino, 26 anos de idade, melanoderma e normossistêmico, buscou tratamento ortodôntico por motivos de apinhamento dental anterior e presença do dente 83 (canino inferior decíduo) não esfoliado. Para um planejamento cirúrgico correto, foi realizada a radiografia lateral do mento com filme oclusal, em que se constatou que o dente 43 encontrava-se por vestibular em relação aos dentes anteriores inferiores. Assim, o paciente foi submetido à cirurgia sob anestesia local, para exodontia do dente 43. Considerações finais: o tratamento para transmigração de caninos inferiores deve incluir minuciosos planejamentos clínico e radiográfico. O tratamento sugerido para a grande maioria dos casos é a remoção cirúrgica, devido à possibilidade de falhas dos outros meios de tratamento, ocasionando complicações posteriores. (AU)

Objective: this paper aims to describe and discuss a surgical removal of canine included in the chin region with the aid of an effective and low-cost complementary exam: lateral radiographic of the mandible using the occlusal film. Case report: a male patient, 26 years old, without systemic diseases sought orthodontic treatment due to anterior crowding and presence of an unerupted tooth 83. In order to perform a correct surgical planning, the lateral radiograph of the occlusal film was performed, where it was found that the tooth 43 was in vestibular position in relation to the lower anterior teeth. Thus, the patient underwent surgery under local anesthesia for tooth extraction. Final considerations: the treatment for transmigration of lower canines should include careful clinical and radiographic planning. The suggested treatment for the vast majority of cases is surgical removal due to the possibility of failure of the other means of treatment, causing subsequent complications. (AU)

Compensatory Class III malocclusion treatment associated with mandibular canine extractions

ABSTRACT Skeletal Class III malocclusions are ideally treated with orthodontic-surgical approaches. However, if there are no significant soft tissue implications and the patient does not want to undergo orthognatic surgery, other treatment options may be considered. The current case report describes a compensatory alternative for Class III malocclusion treatment, by means of mandibular canine extractions. This treatment alternative provided facial profile and occlusal improvement, which remains stable seven years posttreatment.

RESUMO As más oclusões esqueléticas de Classe III são idealmente tratadas com intervenções ortodôntico-cirúrgicas. Contudo, se não existirem implicações estéticas faciais e se o paciente não desejar se submeter à cirurgia ortognática, outras opções de tratamento podem ser consideradas. O presente caso clínico descreve um tratamento compensatório alternativo para a má oclusão de Classe III, com extrações de caninos inferiores. Esse tratamento alternativo propiciou melhoras no perfil facial e na oclusão, que permaneceu estável após sete anos da sua finalização.

Relevancia de la interacción quirúrgico-ortodóncica: resolución de un caso clínico / Relevance of the surgical-orthodontic interaction: resolution of a clinical case

Los autores destacan la importancia de la interdisciplinariedad quirúrgico-ortodóncica en el tratamiento de unc aso clínico que revestía dificultades anátomo-estructurales y su adecuada resolución a través de la colaboración de ambas disciplinas...

Estudio retrospectivo de una población de pacientes sometidos a exodoncias en la Cátedra de Cirugía y Traumatología Bucomaxilofacial I de la Facultad de Odontología de la Universidad de Buenos Aires, en el período entre enero 2012 - mayo 2014 / A retrospective study on a patient population undergoing tooth extraction at the Department of Oral and Maxillofacial Surgery I, School of Dentistry, University of Buenos Aires, over a January 2012 - May 2014 period

La extracción dentaria es una de las prácticas odontológicas realizadas con mayor frecuencia, pero a corto plazo los pacientes necesitan rehabilitaciones orales para optimizar el funcionamiento del sistema estomatognático. Dado que conocer las características de la población que demanda exodoncias puede contribuir a elaborar estrategias para limitar la pérdida de piezas dentarias, nos propusimos 1) registrar las características de la población que demanda exodoncias; 2) identificar las piezas dentarias extraídas; 3) registrar las causas de exodoncia; 4) identificar patologías bucales durante la consulta para una exodoncia. Para llevarlo a cabo se seleccionaron aleatoriamente 2000 historias clínicas de pacientes que concurrieron a la Cátedra de Cirugía y Traumatología Buco Maxilofacial I de la Facultad de Odontología de la Universidad de Buenos Aires (FOUBA) y se realizaron exodoncias con anestesia local entre enero de 2012 y mayo de 2014...

Dental extraction is one of the most frequent practices in dentistry, causing necessary oral rehabilitation to ensure normal stomatognathic system function. The purpose of this study was to get to know the characteristics of the population in need of dental extraction so as to develop strategies tending to limit teeth loss. We set to 1) record the characteristics of the population on demand for dental extraction; 2) Identify teeth extracted; 3) Record cause of dental extraction; 4) Identify oral pathologies during examination for dental extraction. We selected 2000 Records of patients who attended “Cátedra de Cirugía y Traumatología Bucomaxilofacial I de la Facultad de Odontología de la Universidad de Buenos Aires, FOUBA” for dental extraction with local anesthetics in the period between January 2002 and May 2014...

Tratamientos de ortodoncia con resoluciones no convencionales. Alternativa de tratamiento. Exodoncia de caninos superiores e inferiores: reporte de casos clínicos / Orthodontic treatments with unusual resolutions. Alternative treatment. Extraction of upper and lower canines: report of clinical cases

En algunas situaciones particulares, hay que tomar decisiones, independientemente de lo preestablecido en los cánones de la ortodoncia. Es sabida la importancia de la presencia de los caninos en la oclusión, no solamente por su relación con la función del sistema estomatognático, sino por la relevante importancia en la estética de la sonrisa. Sin embargo, la desición crítica de extraer un canino por erupción atípica o por retención ósea desfavorable, o con daño periodontal, puede ser justificada por un pronóstico desfavorable para reducir el tiempo de tratamiento. Esta decisión involucra un compromiso estético y funcional, ya que las características anatómicas del canino lo hacen el verdadero pilar de la oclusión, tanto en relación céntrica como en los movimientos laterales mandibulares. No obstante, se demuestra con los siguientes casos que, a pesar de las decisiones que se han tomado con respecto a la exodoncia, los pacientes han finalizado su tratamiento con una correcta estética y función; por lo tanto, esta alternativa de tratamiento debe ser considerada válida y aceptable...

Peripheral Ossifying Fibroma: A Case Report & Review of Literature.

Gingival enlargements are commonly seen especially localized. Most of these enlargements are non-neoplastic and rather reactive by nature. On clinical examination, it is not always possible to differentiate one specific gingival enlargement from other. Clinically, differentiating one from the other as a specific entity is often not possible. To identify these lesions, histopathological examination is required. One of such seen entities is peripheral ossifying fibroma (POF) that is diagnosed by histopathological examination. Peripheral ossifying is a reactive benign lesion. A clinical report of 23 years old male with POF maxillary left canine and premolar region is reported with treatment and 1-year follow-up.

Four impacted canines in an adult patient: A challenge in orthodontics.

This case report illustrates the management of four impacted canines in an adult patient associated with prolonged retention of the four deciduous teeth. The treatment plan was formulated to extract the lower deciduous teeth, application of the forced eruption with the permanent canines, and extract the upper permanent canines and maintenance of the maxillary deciduous canines. No reshaping of the maxillary deciduous teeth was performed because the patient was satisfied with the results.

La influencia del camino en el color, altura, ancho y altura del margen Gingival en una sonrisa percibida como atractiva / The influence of canine in color, height, width and height of the Gingival margin in a smile perceived as attractiv

Evaluar la influencia del canino con respecto al color, altura, ancho de la corona cl¡nica y la altura del margen Gingival del canino en una sonrisa percibida como atractiva por diferentes grupos de personas de diferente sexo y ocupaci¢n. Material y m‚todos. Estudio prospectivo, descriptivo, observacional y transversal. Se incluyeron a 90 personas las cuales se dividieron en 3 grupos: pacientes, ortodoncistas y odont¢logos en general, conformados cada uno por 30 personas con edades entre 24-55 a¤os de ambos sexos. Para el estudio se utiliz¢ una fotograf¡a original, la cual mostraba, dientes antero superiores alineados. Se realizaron alteraciones con respecto al color, altura, ancho de la corona cl¡nica y la altura del margen gingival del canino para realizar una encuesta en la cual cada uno deb¡a elegir la foto que le parecer¡a la m s atractiva y la menos atractiva. Resultados. Las caracter¡sticas predominantes fueron: el color, altura, ancho de la corona cl¡nica y altura del margen gingival del canino, habiendo una correlaci¢n entre el grado de aceptaci¢n y los diferentes grupos de encuestados. En el Grupo I la Foto B (color intermedio) fue considerada muy atractiva y la Foto C (color oscuro) poco atractiva; en el Grupo II la Foto D (1 mm m s de altura de la corona cl¡nica del canino) fue considerada como muy atractiva y la Foto F (5 mm menos de la corona cl¡nica del canino) como poco atractiva; en el Grupo III la Foto G (1 mm m s del ancho del canino) fue considerada como muy atractiva y la Foto I (5 mm menos del ancho del canino) como poco atractiva y, por £ltimo, en el Grupo IV la Foto K (2 mm menos de la altura del margen gingival del canino) fue considerada como muy atractiva, y la Foto J (es 1 mm m s de la altura del margen gingival del canino) como poco atractiva.

To evaluate the influence of the canine according to color, height, width of the clinical crown and height of the gingival margin of the canine in a smile perceived as attractive by different groups of people of different sex and occupation. Materials and methods. Prospective, descriptive, observational and transversal study. 90 people were included in the study. They were divided into 3 groups: patients, orthodontists and general dentists, each group comprising 30 people aged between 24-55 years old of both sexes. For the study an original photograph was used, which showed, upper front teeth aligned. Alterations were made according to the color, height, width and height of clinical crown and height of the gingival margin of the canine to conduct a survey in which each one had to choose the photo that will appear the most attractive and the least attractive. Results. The predominant characteristics studied in this research were: color, height, width and height of the clinical crown of the canine and height of the gingival margin, having a correlation between the degree of acceptance and the different groups of respondents. In Group I the Photo B (intermediate color) was considered very attractive and Photo C (dark color) unattractive, in Group II Photo D (1 mm more height of the clinical crown of the canine) was considered very attractive and photo F (5 mm less than the clinical crown of the canine) as unattractive, in Group III Photo G (1 mm width but canine) was considered very attractive and the Photo I (5 mm less than canine width) as unattractive and last in Group IV the Photo K (2 mm less than the height of the gingival margin of the canine) was considered very attractive and Photo J (1 mm more than the height of the gingival margin of the canine canine) was few attractive.

Filling of extraction sockets of feline maxillary canine teeth with autogenous bone or bioactive glass

PURPOSE: To evaluate bone healing in the extraction socket of the feline maxillary canine tooth after grafting. METHODS: Eighteen adult cats were submitted to unilateral extraction of maxillary canine tooth and divided into three groups. In group 1 (n=6), control, the extraction socket was left empty. In group 2 (n=6), the extraction socket was filled with autogenous cancellous bone from the iliac crest and in group 3 (n=6), with bioactive glass particulate material. Cats were euthanized at four weeks postoperative. RESULTS: The radiographic examinations performed four weeks after surgery showed that in all groups the healing process converged to a radiopacity similar to that observed in the surrounding bones. Histological examination showed formation of woven bone within the extraction socket. The percentage of newly formed bone within the extraction socket, measured by the histometry, showed no statistically significant difference among the values of the three groups (Kruskal-Wallis'test p>0.05) (group 1: 63.96 ± 5.85, group 2: 66.84 ± 11.67, group 3: 59.28 ± 15.50). CONCLUSION: The bone regeneration observed in the extraction sockets filled with autogenous cancellous bone or bioactive glass was similar to that observed in the control sites, given an observation period of four weeks after extraction of the maxillary canine tooth.

Tratamiento ortodóntlco quirúrglco de canino maxilar impactado con reabsorción radicular bilateral: reporte de caso / Surgical orthodontic treatment of impacted maxillary canine with resorption bilateral radicular: case report

Los dientes caninos superiores permanentes impactados bilaterales son un problema clínico que puede provocar una serie de secuelas irreversibles como la reabsorción radicular de dientes vecinos. Se describe el caso de una paciente con ausencia clínica de caninos superiores que se encontraban impactados orientados hacia vestibular produciendo reabsorción de los dos tercios de la raices de todos los incisivos superiores, los que fueron extraídos, en el mismo acto se realizó la exposición quirúrgica de los dos dientes caninos y posteriormente la tracción ortodóntica de los caninos impactados, en el maxilar inferior se realizaron extracción de primeras premolares inferiores para compensar las extracciones que se realizaron en el maxilar superior. Ocho meses fueron necesarios para observar clínicamente las piezas impactadas. El tiempo de tratamiento fue de 2 años, al finalizar el tratamiento ortodoncico se realizó una ameloplastía de las cuspides de los caninos para dar forma de incisivos laterales.

The that were impacted oriented vestibular reabsorption producing 2/3 root of the upper incisors, they were extracted, with subsequent surgical exposure and orthodontic traction of the impacted canines in the lower jaw were made first premolars extraction, Camouflaging the alveolar biprotrusion. Eight months were required to observe clinically impacted teeth. The treatment time was 2 years old are ameloplastia cusps of the canines to build incisal edge.

Influence of intentional ankylosis of deciduous canines to reinforce the anchorage for maxillary protraction

INTRODUCTION: This retrospective cephalometric study analyzed the influence of intentional ankylosis of deciduous canines in patients with Class III malocclusion and anterior crossbite, in the deciduous and early mixed dentition stages, treated by orthopedic maxillary expansion followed by maxillary protraction. METHODS: Lateral cephalograms of 40 patients were used, divided in 2 groups paired for age and gender. The Ankylosis Group was composed of 20 patients (10 boys and 10 girls) treated with induced ankylosis and presenting initial and final mean ages of 7 years 4 months and 8 years 3 months, respectively, with a mean period of maxillary protraction of 11 months. The Control Group comprised 20 patients (10 boys and 10 girls) treated without induced ankylosis, with initial and final mean ages of 7 years 8 months and 8 years 7 months, respectively, with a mean period of maxillary protraction of 11 months. Two-way analysis of variance and covariance analysis were applied to compare the initial and final cephalometric variables and the treatment changes between groups. RESULTS: According to the results, the variables evidencing the significant treatment changes between groups confirmed that the intentional ankylosis enhanced the sagittal response of the apical bases (Pg-NPerp) and increased the facial convexity angles (NAP and ANB). CONCLUSIONS: The protocol involving intentional ankylosis of deciduous canines enhanced the sagittal response of the apical bases.

INTRODUÇÃO: nesse estudo cefalométrico retrospectivo, analisou-se a influência da anquilose intencional de caninos decíduos em pacientes com má oclusão de Classe III e mordida cruzada anterior, nos estágios de dentição decídua e mista precoce, tratados com expansão ortopédica da maxila, seguida de tração reversa. MÉTODOS: foram utilizadas telerradiografias em norma lateral de 40 pacientes, divididos em 2 grupos pareados por idade e sexo. O Grupo Anquilose foi constituído de 20 pacientes (10 meninos e 10 meninas) tratados com anquilose induzida e que apresentavam as idades médias inicial e final, respectivamente, de 7a 4m e 8a 3m, e o tempo médio de tração reversa de 11 meses. O Grupo Controle, composto de 20 pacientes (10 meninos e 10 meninas) tratados sem anquilose induzida e que apresentavam as idades médias inicial de 7a 8m e final de 8a 7m, e tempo médio de tração reversa de 11 meses. Foram empregadas as análises de Variância a dois critérios e de Covariância para comparar as variáveis cefalométricas inicial e final e as alterações de tratamento entre os grupos. RESULTADOS: segundo os resultados, as variáveis que evidenciaram as mudanças de tratamento significativas entre os grupos confirmaram que o procedimento de anquilose intencional potencializou a resposta sagital das bases apicais (Pg-NPerp) e aumentou os ângulos de convexidade facial (NAP e ANB). CONCLUSÃO: o protocolo envolvendo a anquilose intencional de caninos decíduos potencializou a resposta sagital das bases apicais.

Impaction of permanent upper canine causedby supernumerary tooth with talon cusp type III

Introduction: The talon cusp is defined as a developmental anomaly in which an accessory cusp-like structure projects in the area of the cingulum or cementoenamel junction in the anterior teeth attached to the lingual surface of the crown, ranging in size, shape, length and degree of union with the surface. Case report: This study aimed to report a case of a patient who came to Clinic for Preventive Dentistry of Federal University of Pernambuco, Recife-PE, Brazil, complaining of pain in the upper left region. The clinical exam observed the presence of a supernumerary tooth with talon cusp type III in the canine region which had a carious lesion in the developmental groove at the mesial surface and caused a prolonged retention of permanent tooth. Conclusion: With this we want to emphasize that the Dental Surgeon be aware of the changes caused by dental morphological variations, seeking to conduct a proper treatment plan, meeting the functional and aesthetic needs of the patient.

Comparison of different ultrasonic vibration modes for post removal

This in vitro study compared different ultrasonic vibration modes for intraradicular cast post removal. The crowns of 24 maxillary canines were removed, the roots were embedded in acrylic resin blocks, and the canals were treated endodontically. The post holes were prepared and root canal impressions were taken with self-cured resin acrylic. After casting, the posts were cemented with zinc phosphate cement. The samples were randomly distributed into 3 groups (n=8): G1: no ultrasonic vibration (control); G2: tip of the ultrasonic device positioned perpendicularly to core surface and close to the incisal edge; and G3: tip of the ultrasonic device positioned perpendicularly to core surface at cervical region, close to the line of cementation. An Enac OE-5 ultrasound unit with an ST-09 tip was used. All samples were submitted to the tensile test using an universal testing machine at a crosshead speed of 1 mm/min. Data were subjected to one-way ANOVA and Tukey's post-hoc tests (α=0.05). Mean values of the load to dislodge the posts (MPa) were: G1 = 4.6 (± 1.4) A; G2 = 2.8 (± 0.9) B, and G3= 0.9 (± 0.3) C. Therefore, the ultrasonic vibration applied with the tip of device close to the core's cervical area showed higher ability to reduce the retention of cast post to root canal.

Este estudo in vitro comparou diferentes modos de vibração ultra-sônica na remoção de pinos intra-radiculares fundidos. As coroas de 24 caninos superiores foram removidas, as raízes foram incluídas em blocos de resina acrílica e tratadas endodonticamente. Os espaços para os pinos intra-radiculares foram preparados e depois moldados com resina acrílica autopolimerizável. Após a fundição, os pinos intra-radiculares foram cimentados com cimento de fosfato de zinco. As amostras foram distribuídas aleatoriamente em três grupos (n=8): G1: sem vibração ultra-sônica (controle), G2: ponta do aparelho ultra-sônico posicionada perpendicularmente à superfície do núcleo e perto da borda incisal e G3: ponta do aparelho ultra-sônico posicionada perpendicularmente à superfície do núcleo na região cervical, perto da linha de cimentação. Uma unidade de ultra-som Enac OE-5 com uma ponta ST-09 foi usada. Todas as amostras foram submetidas ao teste de tração utilizando máquina universal de ensaios a uma velocidade de 1 mm/min. Os dados foram submetidos aos testes ANOVA e Tukey post-hoc (α = 0,05). Os valores médios de carga para deslocar os pinos (MPa) foram: G1 = 4,6 (± 1,4) A; G2 = 2,8 (± 0,9), B e G3 = 0,9 (± 0,3) C. Portanto, a vibração ultra-sônica aplicada com a ponta do dispositivo perto da zona cervical do núcleo apresentou maior capacidade de reduzir a retenção de pinos metálicos fundidos no canal radicular.

Root coverage using epithelial embossed connective tissue graft.

In periodontal practice, root coverage after marginal soft tissue recession requires daily clinical decisions. Numerous longitudinal human studies have been presented to support the efficacy and predictability of different mucogingival surgical techniques for root coverage. Over the years, root coverage procedure using the subepithelial connective tissue graft with variations has emerged as the favorite surgical technique. In the case presented in this report, subepithelial connective tissue graft with embossed epithelium was used to cover Miller's class II gingival recession in the upper right canine. The design is such that embossed epithelium exactly fits the recession site and the connective tissue portion is tucked below the gingival margin of the recipient site. In this technique, coronal advancement of flap is not needed. Wider zone of attached gingiva at the recipient site was achieved by this technique.

Tratamiento quirúrgico de caninos mandibulares bilaterales transmigrados / Surgical treatment of bilateral mandibular transmigrated canine

La migración de caninos inferiores es un fenómeno poco común. Su incidencia es menor que incluidos maxilares y son frecuentemente encontrados en jóvenes. Solamente caninos, segundos premolares y terceros molares incluidos migran a lugares ectópicos en su desarrollo y dientes incluidos ectópicos son, en la mayoría de los casos, asintomáticos. La etiología es compleja y poco descrita en la literatura. Un canino es considerado un diente migrado cuando, horizontalmente, más de la mitad del diente atraviesa la línea mediana. Este artículo reporta un caso clínico, con tratamiento quirúrgico de exodoncia de caninos bilaterales incluidos, horizontalmente en la región de la sínfisis. Se observó que la exodoncia es la conducta operatoria más frecuente, presentando en este caso buenos resultados.

Migration of canine mandibles is a very uncommon phenomenon. Their incidence is less frequent than maxillary canines and present frequently in young people. Only canines, second bicuspid and third molars can migrate to ectopic areas in their development and ectopic embedded teeth are, for the most part asymptomatic. The etiology is complex and with poor information. A canine is considered a migrating tooth when it penetrates horizontally the middle line of the mandible. This paper reports a case with surgical treatment of dental extraction, including horizontal bilateral canines in the symphysis region. It was observed that dental extraction is a more frequent treatment and presented with good results in this case.