Clinial study of platform switching for early implantation upper anterior teeth

doi:1012337/zgkqzzxzz.2020.03.003

Abstract

Abstract: Objective: To compare the effect of platform switching and butt-joint implant system on soft and hard tissues around implants in early implantation of upper anterior teeth. Methods: 40 patients with early implantation of upper anterior teeth were randomly divided into two groups: A(platform switching group, implant Nobel Active implant), R(butt-joint group, implant Nobel Replace implant) and 20 patients in each group. CBCT was taken at immediately after operation, 6 months after operation and 12 months after permanent crown restoration. Bone absorption of implant neck, lip and palate was measured at 6 months and 1 year after permanent crown restoration. Pink esthetics score(PES score) was performed after crown restoration. Periodontal soft tissue condition was examined at 12 months after restoration, and the results were analyzed statistically. Results: 1) Average bone resorption: 6 months after operation: in group A, the distal and near(0.25±0.12)mm, the lip and palate (0.28±0.13) mm, in group R, the distal and near(0.30±0.12)mm and the lip and palate(0.29±0.15)mm, there was no significant difference(P>0.05). 12 months after permanent crown restoration: in group A, there were significant differences in proximal and distal(0.38±0.14)mm, lip and palate(0.52±0.17)mm), distal (0.70±0.19)mm and lip and palate (0.77±0.18)mm in group R(P<0.05). 2) Pink aesthetic score: group A(10.90±0.89) score, group R(0.48±1.12) score, there was no significant difference (P>0.05). 3) Soft tissue condition after 12 months of permanent crown restoration: 6 sites average PD(mm) A group (1.98±0.53)mm, R group(2.75±0.75)mm, improved plaque index (mPLI) A group(0.81±0.93), R group(1.34±0.53), improved gingival sulcus bleeding index(mSBI) A group (0.61±0.19), R group (0.98±0.41), the difference was statistically significant(P<0.05). Conclusion: Platform-switching and butt joint implants can both acquire good clinical outcomes in early implantation of upper anterior. However, platform-switching is more bebificial for marginal bone and tissue preservation around dental implants.

Key words: platform switching, bone resorption, early implantation, upper anterior maxilla

CLC Number:

R782.1

ZHU Xuechen, MEI Dongmei, WANG Wenxue, et al. Clinial study of platform switching for early implantation upper anterior teeth[J]. Chinese Journal of Oral Implantology, 2020, 25(1): 8-12.

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