Evaluation Of Between The Occlusal Force And The Tissues Health Surrounding Implant Of ITI Implants With Zirconia All-ceramic Crown

Objective:To investigate the observation of clinical indicators and the amount of implant neck bone resorption with two different cusp inclination of ITI implants with the CAD/CAM zirconia all-ceramic crown.To observe the prosthetic effects of the ITI implants with the CAD/CAM zirconia all-ceramic crown so as to provide evidence for clinic.Methods:The anterior teeth of 24 patients chose at clinic were accepted the ITI implant surgery and had completed the upper part of CAD/CAM zirconia all-ceramic crown.They were divided into 2 groups,of which per group were 12 teeth and the groups were fabricated according to the two different inclination of cusp.Group A:The ITI implant prosthesis with CAD/CAM zirconia all-ceramic crown that occlusal width of bucco-lingual diameter was 2/3 of contralateral teeth of the same name and the inclination of cusp was 15 degree,the occlusal surface morphology adequated.Group B:The ITI implant prosthesis with CAD/CAM zirconia all-ceramic crown that occlusal width of bucco-lingual diameter was 2/3 of contralateral teeth of the same name and the inclination of cusp was 25 degree,the occlusal surface morphology adequated.The per-implant neck bone was observed and measured with intraoral radio graphy at time of functional loading and 3,6 months after functional loading Clinical observation indexes were recorded 6 months after restoration.Results:1.After 6-months clinincal examination,the surface texture, color diverit anatomical shape, marginal fit and gingival health in two groups had no statistic significance (P>0.05).2.Compared to pre-restoration, the amoun of implant neck bone loss have statistic significance in two groups at time of functional loading and 3,6 months after functional loading (P<0.05).3.Among the two cusp inclination of ITI implant with zirconia all-ceramic crown,there were no statistic significance in the amount of implant neck bone loss at the 3,6 months after cementation(P>0.05).Conclusion:After 6 months using,ITI implant with zirconia all-ceramic crown had good esthetics and gingival health.The all-ceramic crown with two different inclination of cusp may affect the amount of the implant neck bone loss.