Study on clinical effectiveness between flap and flapless immediate implant placement

doi:10.19438/j.cjoms.2020.02.011

Abstract

Abstract: PURPOSE： This study evaluated bone absorption, implant retention and soft tissue score of the labial bone plate in immediate dental implantation with or without flaps, and provide some guidance for clinical selection of different surgical methods. METHODS: Forty-two patients with immediate dental implantation of maxillary anterior teeth were selected as the subjects of this study. They were divided into flap group (22 cases) with 24 implants and flapless group (20 cases) with 22 implants. Mimics software was used to fit and compare the local bone mass of the patients on the day of operation and 6 months after operation. SPSS 20.0 software package was used to analyze the mean and variance of bone absorption 6 months after implantation, and the retention rate of implants was calculated. Pink esthetic score (PES) and papilla index score(PIS) of the two groups were compared 2 years after permanent restoration. RESULTS: The bone resorption of implant plateau (implant neck plateau), middle (implant length 1/2) and apical (implant lowest end) 6 months after implantation were (0.591±0.604), (1.145±0.923), (0.951±1.092), (0.384±0.321), (0.469±0.321), (0.209±0.288)mm, respectively. There was no significant difference in bone resorption in the middle part of implant and apical bone, except in the neck of implant. The implants in the flap group and the flapless group did not fall off during the observation period, and the implant retention rate was 100%. The pink aesthetic index and gingival papilla index of single tooth in the flap group (19 cases) and the flapless group (18 cases) were (7.34±1.132), (8.04±0.631); (2.04±0.591), (2.41±0.254),respectively(P>0.05). CONCLUSIONS: Immediate implant with flap or flapless technique had relatively stable marginal bone levels. Bone resorption in flapless group was lower than that in flap group. There was no significant difference in PES, PIS and P values between the two groups 2 years after permanent repair, but long-term observation was still needed.

Key words: Immediate Implant, Flap, Flapless, Aesthetics, Anterior teeth

CLC Number:

R782.1

SUN Liang, QU Zhe. Study on clinical effectiveness between flap and flapless immediate implant placement[J]. China Journal of Oral and Maxillofacial Surgery, 2020, 18(2): 144-147.

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