Comparative analysis of the stress distribution in five anatomical types of maxillary central incisor.
Technol Health Care
; 25(S1): 53-62, 2017 Jul 20.
Article
em En
| MEDLINE
| ID: mdl-28582892
ABSTRACT
BACKGROUND:
The maxillary central incisor is one of the most important anatomical indicators in esthetics, and stress distribution may vary among its five anatomical views (labial, palatal, mesial, distal, and incisal).OBJECTIVE:
To compare stress distribution among the five anatomical views of the maxillary central incisor under loading force at five angles and to observe and analyze the stress distribution in the dentin and periodontal ligament.METHODS:
We established three-dimensional finite element models of the five different views, which simulated the bite force with a static load force at 0∘, 30∘, 45∘, 60∘, and 90∘. The stress and displacement values for the cementoenamel junction (CEJ)-apical labial, palatal, mesial, and distal and the equivalent stress values on the periodontal ligament of the maxillary central incisor were calculated.RESULTS:
As the angle increased, the equivalent stress on the periodontal ligament, overall tooth displacement, equivalent stress, and displacement over the four views increased. The peaks of equivalent stress over the four views appeared within 0.8-17 mm below the CEJ, although all equivalent stress values decreased while approaching the peak. Within 1-19 mm below the CEJ, the equivalent stress over the M1 and P1 views of the maxillary central incisor decreased substantially.CONCLUSION:
The peaks of the equivalent stress over the M1 and P1 views of the maxillary central incisor and their stress distribution were lower than those of the other three types. Our findings provided theoretical data on the biomechanics of this esthetically important tooth, which may be useful during implantation of missing maxillary central incisors.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Análise do Estresse Dentário
/
Incisivo
Tipo de estudo:
Prognostic_studies
Limite:
Adult
/
Female
/
Humans
Idioma:
En
Revista:
Technol Health Care
Assunto da revista:
ENGENHARIA BIOMEDICA
/
SERVICOS DE SAUDE
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
China