Evaluation of the influence of the abutment of the angle screw channel system on the success rate and aesthetic effect of maxillary anterior implant restorations

doi:10.19439/j.sjos.2026.02.007

Abstract

Abstract: PURPOSE: To evaluate the influence of the abutment of the angle screw channel system on the success rate and aesthetic effect of maxillary anterior implant restorations. METHODS: A total of 102 patients with maxillary anterior implantation who were admitted from May 2021 to December 2023 were selected and divided into the control group (n=51, with straight abutment screw fixation) and the experimental group (n=51, with angle screw channel system abutment) by the random number table method.The implant survival rate, marginal bone loss, aesthetic outcomes [pink esthetic score (PES) and white esthetic score (WES)], periodontal indicators [probing depth (PD), sulcus bleeding index (SBI) and plaque index (PLI)], quality of life [evaluated by the Oral Health Impact Profile-14 (OHIP-14) Scale] and complication rates were compared between the two groups. Results: After 1-year follow-up, the implant retention rates of both groups were 100%,the bone resorption around the implant in the experimental group was significantly higher than that in the control group (P<0.05), PES and WES scores of the experimental group were significantly higher than those of the control group (P <0.05) and the OHIP-14 score of the experimental group was significantly lower than that of the control group (P<0.05). Three months after treatment, the PD, SBI and PLI in the experimental group were significantly lower than those in the control group (P<0.05). There was no significant difference in the incidence of complications between the experimental group and the control group (P>0.05). CONCLUSIONS: The abutment of the angle screw channel system can significantly improve the success rate and aesthetic effect of maxillary anterior implantation and is suitable for clinical promotion and application.

Key words: Maxillary anterior implants, Angled screw channel abutment, Implant success rate, Aesthetic outcomes

CLC Number:

R783.4

Zhao Xibo, Feng Baojing, Song Chunyan, Fan Yuting, Yuan Qingmin. Evaluation of the influence of the abutment of the angle screw channel system on the success rate and aesthetic effect of maxillary anterior implant restorations[J]. Shanghai Journal of Stomatology, 2026, 35(2): 154-158.

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