Optimizing pier abutment management using digital approach with nonrigid connector for superior treatment outcomes

Abstract

In clinical dental practice, missing the first premolar and first molar are a common finding in the maxillary or mandibular arch. The result is a long bridge span in which the canine and the second molar act as terminal abutments and the second premolar act as a pier abutment. Teetering movements are usually observed due to the inclination of terminal abutments intruding during function, with the pier abutment serving as a pivot point. Due to these dislodging forces, the rigid fixed dental prosthesis (FDP) with pier abutment has a higher debonding rate than short-span prosthesis, resulting in marginal leakage and caries. This situation can be avoided using nonrigid connectors that act as stress breakers between the retainer and the pontic. This report describes incorporating a digitally fabricated nonrigid connector to rehabilitate a pier abutment case.

Keywords

• direct metal laser sintering
• key and keyway
• nonrigid connector
• pier abutment
• stress breaker