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Avaliação das posições de terceiros molares inclusos e semi-inclusos segundo as classificaçõesde Winter e Pell & Gregory recorrendo à consulta de ortopantomografias dos doentes da clínica universitária Egas Moniz
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Advisor(s)
Abstract(s)
Objectivo: Avaliar as posições mais frequentes dos terceiros molares inclusos e
semi-inclusos observadas em ortopantomografias digitais dos pacientes da Clínica
Universitária Egas Moniz, recorrendo às classificações de Winter e Pell & Gregory.
Materiais e Métodos: Para a realização deste estudo foram observadas 200
ortopantomografias de pacientes que compareceram à consulta de cirurgia em bloco
operatório da Clínica Universitária Egas Moniz, entre os anos 2016, 2017, 2018 e 2019.
Nestas foram avaliados e classificados os terceiros molares inclusos ou semi-inclusos
presentes, de acordo com os sistemas de classificação de Winter e Pell & Gregory.
Resultados e Discussão: Neste trabalho 70% da amostra pertence ao sexo
feminino e 30% ao sexo masculino. Verificou-se que na mandíbula a presença de
terceiros molares foi mais prevalente (51,1%), comparativamente à maxila (48,9%).
Relativamente à classificação de Winter a posição mais prevalente foi a vertical
(53,4%). No que respeita a classificação de Pell & Gregory, para os terceiros molares
superiores a posição mais frequente foi a A (67,5%) e nos terceiros molares
mandibulares a posição mais frequente neste trabalho foi a IB (26,8%).Conclusão: Previamente a uma cirurgia de extração de terceiros molares, é necessário um cuidado diagnóstico e um adequado plano de tratamento, sendo indispensável um exame radiográfico, como a ortopantomografia. Neste exame é possível a avaliação da posição do dente a ser extraído, o que permite ao Médico Dentista antecipar o grau de dificuldade da cirurgia, adaptando a técnica cirúrgica e prevenindo possíveis lesões futuras. Neste estudo os resultados não foram totalmente concordantes com a literatura, mas no entanto, verifica-se alguma discordância entre diversos autores, sendo portanto este tema bastante controverso.
Objectives: Evaluate the most frequent positions of the impacted and semiimpacted third molars observed in digital panoramic radiographs of patients from Egas Moniz University Clinic, using the Winter and Pell & Gregory classifications. Materials and Methods: In order to carry out this study, 200 digital panoramic radiographs of patients who attended the surgery appointment in the operating room at Egas Moniz University Clinic, between 2016, 2017, 201 and 2019, where were observed and classified the present third molars according to Winter’s and Pell & Gregory’s classifications. Results and Discussion: In this study 70% of the sample belongs to women and 30% to men. It was found that in the mandible, the presence of third molars was more prevalent (51,1%) compared to the maxilla (48,9%). Regarding Winter’s classification, the most prevalent position was vertical (53,4%). Regarding the Pell & Gregory classification, for the upper third molars, the most frequent position was A (67,5%) and in the mandibular third molars, the most frequent position in this study was IB (26,8%). Conclusion: Prior to third molar extraction surgery, diagnostic care and an adequate treatment plan are required, and a radiographic exam, such as panoramic radiograph is essential. In this exam it is possible to evaluate the position of the tooth to be extracted, which allows the Dentist to anticipate the degree of difficulty of the surgery, adapting the surgical technique and preventing possible future injuries. In this study, the results were not fully in line with the literature, but there is, however, some disagreement between different authors, which is therefore a very controversial topic.
Objectives: Evaluate the most frequent positions of the impacted and semiimpacted third molars observed in digital panoramic radiographs of patients from Egas Moniz University Clinic, using the Winter and Pell & Gregory classifications. Materials and Methods: In order to carry out this study, 200 digital panoramic radiographs of patients who attended the surgery appointment in the operating room at Egas Moniz University Clinic, between 2016, 2017, 201 and 2019, where were observed and classified the present third molars according to Winter’s and Pell & Gregory’s classifications. Results and Discussion: In this study 70% of the sample belongs to women and 30% to men. It was found that in the mandible, the presence of third molars was more prevalent (51,1%) compared to the maxilla (48,9%). Regarding Winter’s classification, the most prevalent position was vertical (53,4%). Regarding the Pell & Gregory classification, for the upper third molars, the most frequent position was A (67,5%) and in the mandibular third molars, the most frequent position in this study was IB (26,8%). Conclusion: Prior to third molar extraction surgery, diagnostic care and an adequate treatment plan are required, and a radiographic exam, such as panoramic radiograph is essential. In this exam it is possible to evaluate the position of the tooth to be extracted, which allows the Dentist to anticipate the degree of difficulty of the surgery, adapting the surgical technique and preventing possible future injuries. In this study, the results were not fully in line with the literature, but there is, however, some disagreement between different authors, which is therefore a very controversial topic.
Description
Dissertação para obtenção do grau de Mestre no Instituto Universitário Egas Moniz
Keywords
Ortopantomografia Terceiros molares Winter, Pell & Gregory