Clinical Study on Outcomes of Root Submergence Technique for Implant-supported Restorations in Anterior Region.

doi:10.13701/j.cnki.kqyxyj.2022.11.008

Abstract

Abstract: Objective: To evaluate the outcomes of root submergence technique (RST) in the anterior pontic sites of implant-supported fix partial bridges, and to discuss its technical key points. Methods: Patients who accepted implant-supported fix partial bridges in the anterior maxillary region were chosen for the present study. Roots were submerged in the pontic sites and soft tissue was conditioned with provisional implant-supported restorations after implant osseointegration. Final restorations were produced after 3 months. Patients revisited after one year. Pink esthetic score (PES) was recorded on the day of final restoration and 1-year revisit. Modified plaque index (mPI) and modified sulcus bleeding index (mSBI) were recorded on the day of 1-year revisit. Complications were monitored during the follow-up period. Results: A total of 11 roots were submerged. There was no RST related complication during the follow-up period. Mean PES value at final restoration and 1-year revisit were 8.91±0.94 and 9.18±0.87, respectively, which had no significant difference (P>0.05). At 1-year revisit, mean value of mPI and mSBI at pontic sites were 0.82±0.60 and 0.45±0.52, while 0.73±0.79 and 0.36±0.50 at contralateral sites. The differences between pontic and contralateral sites were not significant (P>0.05). Conclusion: The short-term outcomes of RST are satisfied in the anterior pontic sites of implant-supported fix partial bridges.

Key words: root submergence technique, anterior region, pontic, implant-supported restoration, clinical outcomes

DU Ruitian, LIU Senqing, HE Juan, QIU Yaocong. Clinical Study on Outcomes of Root Submergence Technique for Implant-supported Restorations in Anterior Region.[J]. Journal of Oral Science Research, 2022, 38(11): 1037-1041.

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