›› 2018, Vol. 38 ›› Issue (6): 548-551.

• Clinical Research • Previous Articles     Next Articles

In vivo correlation of wedge-shaped defects and occlusal contact determined with T-scan Ⅲ system

Jing-Jing NIE,Jia-Fei FENG   

  • Received:2017-03-23 Revised:2017-05-23 Online:2018-06-28 Published:2018-07-05
  • Contact: Jing-Jing NIE E-mail:355886355@qq.com

Abstract: Objective To measure the occlusion of teeth with wedge-shaped defects and explore the correlation. Methods Following examination from 32 patients, 32 teeth which were the only teeth with wedge-shaped defect in single quadrant were regarded as the experiment group. Also, 34 teeth with no such non-cariouscervical lesions were regarded as the control group. Routine clinical examination method and the t-scan Ⅲ system were used to check the distribution of premature contacts(PC) on the subject teeth, and the t-scan Ⅲ system was used to take a dynamic, quantitative analysis for occlusal contact in centric occlusion, lateral occlusion and protrusion of subject teeth. Results The proportion of the teeth with premature contact (PC) in working side in wedge-shaped defect teeth from two experiment groups(75.0%,70.0%) was much higher than that in their corresponding control teeth (17.7%,18.2%)(P <0.05). In working side, the percentages of occlusal force and the occlusal contact strain of wedge-shaped defect teeth were significantly higher than the control teeth(P <0.05). Conclusion Dysfunction occlusal force can have relation to the progression of wedge - shaped defects occurring on single teeth.

Key words: wedge-shaped defect, occlusal interference, occlusal contact

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