Study of changes in stress distribution in alveolar bone due to tilting of tooth

Nishu Vakil; Abhishek Singh; Anish Manocha

Volume : VIII, Issue : V, May - 2019

Study of changes in stress distribution in alveolar bone due to tilting of tooth

Nishu Vakil, Abhishek Singh, Anish Manocha

Abstract :

Background– It is common in the dental practice that the teeth adjacent to the lost teeth tend to tilt if the edentulous space has not been restored in time that may attribute to the influence of mesial components of occlusal force. Aim– To conduct photoelastic study of changes in stress distribution in alveolar bone due to tilting of tooth. Methods– In this study the masticatory load was shifted to an anatomic model of mandible where first molar was missing and second molar was tilted in various degrees was simulated. Induced stress in alveolar bone was investigated using three dimensional photoelastic technique. Results– Highest fringe order in alveolar bone at various degrees of tilt of mandibular second molar tooth was recorded around the roots of second premolar, mesial root of second molar and distal root of second molar. In region 3, where maximum shear stress was lowest of the three at 00 tilt, the values were low for three regions. At 200 tilt, rise in shear stress was seen. Stress neither increased or decreased at all the other angles. In region 1, tilting showed reduction in values for 200 where the value of maximum shear stress was above the baseline. Shear stress was low at other angles. Conclusion– Findings of present study suggest that stresses were centered around the mesial root. Tooth looses its strength due to vertical bone loss along the mesial root. Hence the teeth having tilt >250 should not be used