Scientific article
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English

Immediately versus early placed bone-level-tapered implants supporting all-ceramic crowns on titanium base abutments : 1-year radiographic and pink esthetic outcomes of a multicenter pilot RCT

Publication date2024-02-09
First online date2024-02-09
Abstract

Objectives: Aim of this study was to assess survival rates, radiographic, and pink esthetic outcomes of a bone-level-tapered (BLT) implant following immediate or early implant placement.

Materials and methods: Patients in need of tooth extraction and one implant in the anterior or premolar area were recruited in five centers. Patients were randomly assigned to the immediate or early placement protocol. Implants were restored with all-ceramic crowns cemented to titanium-base-abutments. Radiographic bone levels, implant stability quotient (ISQ), and pink esthetic outcomes were assessed. Data were analyzed descriptively. Level of significance was set at 0.05. Differences between groups were tested using Wilcoxon-signed-rank and Mann-Whitney-U test as nonparametric tests.

Results: A total of 60 patients received 60 BLT implants (Institut Straumann). At 12-months, 59 implants (98.3%) were osseointegrated. The mean distance from implant shoulder to first bone-to-implant contact was 0.15 ± 0.59 mm without significant differences between the groups. Median ISQ values increased from 75.5 to 78.5. A mean buccal recession of 0.1 ± 0.70 mm occurred with no difference between groups. The mean papilla height gain in both groups was 0.5 ± 1.47 mm mesially and 0.4 ± 1.36 mm distally.

Conclusions: After 1 year, immediately and early placed BLT implants exhibit similar bone level changes, ISQ values, and pink esthetic outcomes.

Clinical significance: The present research contributes to the knowledge on clinical outcomes of immediately and early placed BLT implants restored with buccally microveneered ceramic single crowns out of two different ceramic materials. The research shows that similar esthetic and radiographic outcomes can be reached by means of immediate implant placement compared to the conventional early placement protocol. The improvement of esthetic soft-tissue parameters over time was shown for both implant placement protocols.

Keywords
  • All-ceramic crowns
  • Bone-level-tapered implants
  • Early placement
  • Immediate placement
  • Peri-implant bone levels
  • Soft-tissue esthetics
Citation (ISO format)
HICKLIN, Stefan et al. Immediately versus early placed bone-level-tapered implants supporting all-ceramic crowns on titanium base abutments : 1-year radiographic and pink esthetic outcomes of a multicenter pilot RCT. In: Journal of esthetic and restorative dentistry, 2024. doi: 10.1111/jerd.13206
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Article (Published version)
Identifiers
Journal ISSN1496-4155
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Technical informations

Creation20/06/2024 11:50:52
First validation21/06/2024 06:55:57
Update time21/06/2024 07:17:44
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