Relação do posicionamento com a inclinação do terceiro molar inferior por meio da TCFC
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2024-03-07
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Universidade Estadual Paulista (Unesp)
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Objetivo: Este trabalho estudou a possível relação entre a classificação Winter (1926) e a inclinação vestíbulo/lingual de 3os molares inferiores (TMI), por meio de imagens de Tomografia Computadorizada de Feixe Cônico (TCFC). Material e Métodos: Foram selecionados, de um banco de dados de uma clínica particular, exames de TCFC realizados para o planejamento cirúrgico de TMI de indivíduos, de ambos os sexos, com idades compreendidas entre 15 e 26 anos. Estes exames foram adquiridos, abrangendo as regiões bilaterais relativas aos TMI. Nos exames, em cada TMI, foram realizadas, por um único examinador previamente calibrado, duas mensurações com a ferramenta ‘’ângulo’’ no software OnDemand 3D (Cybermed, Seul, Corea do Sul): a) a angulação entre os eixos do TMI e 2º molar inferior, possibilitando a classificação de acordo com Winter (1926) - mesioangulado (M), horizontal (H), Distoangulado (D) e vertical (V) e b) a inclinação do TMI no sentido vestíbulo/lingual, considerando-se a angulação entre o longo eixo do TMI e o do rebordo alveolar - centralizado (C); lingualizado (L) ou vestibularizado (Vb). Resultados: Dos 124 indivíduos, 74 (60%) pertenciam ao sexo feminino. O sexo e lado não influenciaram significativamente em ambas as variáveis estudadas. Observou-se associação estatisticamente significativa entre a classificação e Winter (1926) e a inclinação vestíbulo/lingual dos TMI (p<0,001), sendo os TMI disto angulados e verticais mais associados com a inclinação centralizada (C) e aqueles mésioangulados com a inclinação lingualizada (L). Conclusão: Os resultados indicaram que a classificação de Winter dos TMI possibilita que seja inferida sua inclinação no sentido vestíbulo/lingual do rebordo ósseo alveolar.
Objective: This work studied the possible relationship between the Winter classification (1926) and de buccal/lingual inclination of lower 3rd molars (IMT), using Cone Beam Computed Tomography (CBCT) images. Material and Methods: CBCT exams performed for IMT surgical planning of individuals of bothsexes, aged between 15 and 26 years, were selected from a private clinic database. These examswere acquired, covering the bilateral regions related to the IMT. In the exams, in each IMT, two measurements were carried out by a single previously calibrated examiner using the ‘’angle’’ tool in the OnDemand 3D software (Cybermed, Seoul, South Korea): a) the angulation between the axes of the IMT and 2nd lower molar, enabling classification accordint to Winter (1926) – mesioangulated (M), horizontal (H), distoangulated (D) and vertical (V) and b) the inclination of the IMT in the buccal lingual direction, considering the angulation between the long axis of the IMT ant that of the alveolar ridge – centralized (C), lingualized (L) and buccalized (Vb). Results: Of the 124 individuals, 74 (60%) were female. Sex and side did not significantly influence both variables studied. A statistically significant associantion was observed between the classification and Winter (1926) and the buccal/lingual inclitations of the angled and vertical IMT (p<0.001), with the angled and vertical IMT being more associated with the centralized (C) and those mesioangulated with the inclination lingualized (L). Conclusion: The results indicated that the Winter classification of the IMT allows its inclination in the buccal/lingual direction of the alveolar bone ridge to be inferred.
Objective: This work studied the possible relationship between the Winter classification (1926) and de buccal/lingual inclination of lower 3rd molars (IMT), using Cone Beam Computed Tomography (CBCT) images. Material and Methods: CBCT exams performed for IMT surgical planning of individuals of bothsexes, aged between 15 and 26 years, were selected from a private clinic database. These examswere acquired, covering the bilateral regions related to the IMT. In the exams, in each IMT, two measurements were carried out by a single previously calibrated examiner using the ‘’angle’’ tool in the OnDemand 3D software (Cybermed, Seoul, South Korea): a) the angulation between the axes of the IMT and 2nd lower molar, enabling classification accordint to Winter (1926) – mesioangulated (M), horizontal (H), distoangulated (D) and vertical (V) and b) the inclination of the IMT in the buccal lingual direction, considering the angulation between the long axis of the IMT ant that of the alveolar ridge – centralized (C), lingualized (L) and buccalized (Vb). Results: Of the 124 individuals, 74 (60%) were female. Sex and side did not significantly influence both variables studied. A statistically significant associantion was observed between the classification and Winter (1926) and the buccal/lingual inclitations of the angled and vertical IMT (p<0.001), with the angled and vertical IMT being more associated with the centralized (C) and those mesioangulated with the inclination lingualized (L). Conclusion: The results indicated that the Winter classification of the IMT allows its inclination in the buccal/lingual direction of the alveolar bone ridge to be inferred.
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Cirurgia, Terceiro molar, Tomografia computadorizada de feixe cônico, Surgery, Third Molar, Cone beam computed tomography