Stress distribution on maxillary central incisorunder similar traumatic situations with different loading forces: a 3-D finite element analysis.

Abstract

Aim: The present study aimed to analyze the stress distribution in the dentoalveolar structures of a maxillary central incisor submitted to two situations of impact loading. Materials and Methods: The following loading forces were applied using a three-dimensional finite element model: a force of 500 N at an angle of 45° on the buccal surface of the crown and a 2000 N force acting in the same direction and surface of the tooth. Results: Harmful stress was observed in the second situation, suggesting damage to both the tooth and adjacent tissue. However, the damage found in soft tissues such as dental pulp, was negligible. Conclusion: Injuries resulting from the traumatic situations were more damaging to the integrity of the tooth and its associated hard-tissue structures. Uniterms: Tooth injuries. Finite element analysis. Biomechanics. Computing methodologies. Threedimensional imaging.

Methods and applications of finite element analysis in dental trauma research: A scoping review

“…46 A total of 12 studies were categorized in the subdomains of etiopathogenesis and the factors affecting etiopathogenesis. [16][17][18][19][20][21][22][23][24][25][26][27] Similar studies can also be designed to evaluate the biomechanics behind the other risk factors such as proclination of teeth, increased overjet, inadequate lip coverage, open-bite, etc.…”

“…Eleven studies utilized Computed Tomographic (CT) scans for development of model. [18][19][20][21][22]28,31 Cone Beam CT scans were utilized for developing the model in 13 studies, 24,27,38,39,41,42,45,46,53,57,[59][60][61] whereas microCT scans were used by 4 studies. 25,49,54,58 Intraoral periapical radiograph was used to develop FE model in one study 17 and digital images were utilized in two studies.…”

“…Damping factor constant of 0.1 was considered in the study done by Oskui et al 49 The Poisson's ratio for enamel, dentin, pulp, PDL, cortical, and cancellous bone was in the range of 0.30-0. Regarding the boundary conditions, 11 research did not provide details of the constraints on the model, 17,[20][21][22]25,29,34,39,47,53,56 while 14 studies did not mention about the interaction between the substructure interfaces. 16,17,[19][20][21]23,25,47,[49][50][51][52][53]56,57 The characteristics of the loading conditions are given in Table 5.…”

“…Regarding the boundary conditions, 11 research did not provide details of the constraints on the model, 17,[20][21][22]25,29,34,39,47,53,56 while 14 studies did not mention about the interaction between the substructure interfaces. 16,17,[19][20][21]23,25,47,[49][50][51][52][53]56,57 The characteristics of the loading conditions are given in Table 5. Force in the range of 100 N-2000 N was applied to simulate traumatic injury.…”

“…Twelve studies were categorized in the epidemiology and therapeutic domains. [16][17][18][19][20][21][22][23][24][25][26][27][50][51][52][53][54][55][56][57][58][59][60][61] The majority of research was conducted to identify the stress zone in different conditions such as traumatic loading in various directions, 16,[18][19][20][21][22][23] immature maxillary central incisor, 17,25,27 tooth adjacent to traumatized maxillary central incisor, 24 ankylosed tooth and the role of mouthguard to protect it. 26 Similarly, therapeutic domain comprised of analysis of stress distribution in conditions such as tooth restored with porcelain veneers, 50 fractured incisor, 51 splinting of replanted or injured teeth, 52,55,60,61 fragment reattachment, 53,54,58 post restorations, 56 and ...…”