Abstract
Statement of problem
Whether increasing the space for peri-implant soft tissues by using implant systems
with conical or convergent transmucosal components would improve tissue stability
and esthetics is unclear.
Purpose
The purpose of this prospective clinical study was to evaluate the clinical and esthetic
outcomes of using tissue-level implants with a convergent collar in the esthetic zone
that had been rehabilitated following the biological oriented preparation technique
(BOPT) approach after a 3-year follow-up period.
Material and methods
Sixteen participants with at least 1 nonrestorable tooth in the maxillary anterior
region or with congenitally missing maxillary lateral incisors were enrolled, and
tissue-level implants with a convergent collar were inserted 3 months after extraction.
The implants were restored with cemented single crowns designed according to the BOPT
protocol. Bone resorption and the pink esthetic score were evaluated over a 3-year
period.
Results
Fifteen participants (mean age: 54.6 years) were evaluated over the 3-year period
(total: 16 implants). One participant with 1 implant relocated dropped out of the
study. The 3-year implant cumulative survival rate was 100%. The mean ±standard deviation
bone-level change was 0.071 ±0.11 mm. The mean pink esthetic score was 8.5 ±1.59,
range 4-10.
Conclusions
The use of the BOPT protocol to restore tissue-level implants with a convergent collar
achieved good esthetic results and maintained stable soft and hard peri-implant tissues.
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Article info
Publication history
Published online: June 18, 2019
Identification
Copyright
© 2019 by the Editorial Council for The Journal of Prosthetic Dentistry.
