Clinical outcomes of the biologically oriented preparation technique (BOPT) in fixed dental prostheses: A systematic review

Cristian Abad-Coronel; Jennifer Villacís Manosalvas; Carolina Palacio Sarmiento; Jonathan Esquivel; Ignazio Loi; Guillermo Pradíes

doi:10.1016/j.prosdent.2022.07.010

Clinical outcomes of the biologically oriented preparation technique (BOPT) in fixed dental prostheses: A systematic review

J Prosthet Dent. 2022 Sep 30:S0022-3913(22)00488-7. doi: 10.1016/j.prosdent.2022.07.010. Online ahead of print.

Authors

Cristian Abad-Coronel¹, Jennifer Villacís Manosalvas², Carolina Palacio Sarmiento², Jonathan Esquivel³, Ignazio Loi⁴, Guillermo Pradíes⁵

Affiliations

¹ Associate Professor, Faculty of Dentistry, Universidad de Cuenca, Cuenca, Ecuador; Professor, Faculty of Dentistry, Universidad San Francisco de Quito, Quito, Ecuador. Electronic address: cristian.abad@ucuenca.edu.ec.
² Graduate student, Faculty of Dentistry, Universidad de Cuenca, Cuenca, Ecuador.
³ Associate Professor, Faculty of Dentistry, Louisiana State University, Baton Rouge, La.
⁴ Dental Private practice, Cagliari, Italy.
⁵ Chairman, Restorative and Conservative Department, Faculty of Dentistry, Universidad Complutense de Madrid, Madrid, Spain.

PMID: 36192194
DOI: 10.1016/j.prosdent.2022.07.010

Abstract

Statement of problem: The biologically oriented preparation technique is a concept with a vertical tooth preparation, gingitage, an immediate interim restoration preserving the clot, and a specific laboratory technique aiming to adapt the marginal periodontal tissue to a remodeled emergence profile of the crown. However, the published scientific evidence on this subject is limited.

Purpose: The purpose of this systematic review was to analyze whether using the biologically oriented preparation technique leads to improved clinical outcomes in terms of probing depth, gingival inflammation index, gingival marginal stability, and fewer mechanical and biological complications.

Material and methods: Recommendations from the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines were used in this systematic review. An electronic search of the MEDLINE/PubMed, EMBASE, Science Direct, Wiley Online Library, Cochrane, and ProQuest databases was made for articles published between March 2010 and July 2021 using keywords. Three reviewers selected and analyzed all articles that mentioned the biologically oriented preparation technique and met the inclusion criteria.

Results: A total of 6 articles met the inclusion criteria: 1 prospective randomized clinical study, 1 randomized clinical study, 1 prospective clinical study, and 3 case series. According to these studies, of all the teeth treated with the biologically oriented preparation technique, probing depth (greater than 3 mm) increased in only 2.3%, gingival inflammation was present in 22.8%, gingival recession occurred in 1.7% (decreased gingival stability), and mechanical and biological failures occurred in 4.4% of the teeth.

Conclusions: Fixed dental prosthesis treatments performed following the concept of the biologically oriented preparation technique did not increase probing depth and showed a moderate rate of gingival inflammation, lower recession rates, and lower mechanical and biological failures at the 5-year follow-up. The biologically oriented preparation technique appears to be a viable alternative technique for obtaining satisfactory and stable clinical results up to 5 years. Long-term randomized clinical trials are recommended to reach more conclusions about this protocol.

Publication types

Review