A retrospective study on the long-term bone resorption of a single free-end dental implant

doi:10.19438/j.cjoms.2023.01.009

Abstract

Abstract: PURPOSE: To investigate whether there is a difference in bone resorption between free-end and non-free-end single implant. METHODS: A total of 50 patients with tooth loss (50 implants) for implant restoration were selected. According to the tooth position, they were divided into non-free-end missing group (group A) and free-end missing group (group B). One-stage surgery was performed with eligible implants which were of different lengths and 4.1 mm in diameter. Single crown was placed after 3 months, Bone resorption was measured on CBCT after 36 months of follow-up. SPSS 22.0 software package was used for data analysis. RESULTS: There was no loosing or falling off of implants during the follow-up period. The distal bone resorption of group A was (0.288±0.183)mm, and the mesial bone resorption of group A was (0.291±0.136)mm, the distal bone resorption of group B was (0.562±0.201)mm, the mesial bone resorption of group B was (0.425±0.221)mm, the average bone resorption of group A was (0.289±0.144)mm, the average bone resorption of group B was (0.494±0.182)mm. Among them, the distal bone resorption of group B was significantly more than that of group A (P<0.05), and the average bone resorption of group B was significantly more than that of group A(P<0.05). CONCLUSIONS: The amount of bone resorption in the free end of a single implant is significantly higher than that of the non-free-end single implant, suggesting that the free-end single implant restoration has a higher risk of bone resorption.

Key words: Implant, Bone resorption, Free-end

CLC Number:

R782.1

SONG Hao-tian, HONG Duo, QU Xiao-hui. A retrospective study on the long-term bone resorption of a single free-end dental implant[J]. China Journal of Oral and Maxillofacial Surgery, 2023, 21(1): 55-58.

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