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VOLUME 2 NO. 5 , 2018

ONLINE FIRST

Peri-implant tissue score (PITS) as a measure of success, applied to 869 dental implants from a retrospective clinical study
Zbynek Mazur / Ladislav Korábek / Daniel Mazur

Peri-implant tissue score (PITS) as a measure of success, applied to 869 dental implants from a retrospective clinical study

Objective: This article presents amethodology of a comprehensive score for assessment and monitoring of dentalimplant success from the peri-implant tissue perspective. It involves onlystandard and minimally invasive techniques accessible to general dental practices,without the need for special equipment. Methods and Materials:The proposed score methodology combines existing consensual global knowledgeregarding aspects of dental implant success with the standard examination toolsaccepted for regular recall assessment. The score is a sum of five three-gradeparameters: bone level, peri-­implant inflammation, amount of attached mucosa,tissues recession (ie, exposure of implant components to intraoralenvironment), and the horizontal buccal profile of the alveolar process. Thename peri-implant tissue score (PITS) is derived from the intended primary useof monitoring the state of implants and the surrounding hard and soft tissues.With its emphasis on buccal-aspect tissues, the score is designed to aid thedetection of early signs of tissues deterioration. Results: Theuse of the score is demonstrated on a sample pool of 869 retrospectivelyevaluated implants with airborne-particle–abraded, acid-etched surfaces withtime in service from 0 to 12 years. The parameters constituting the score werestatistically tested on correlation with a reference set of success criteria,on mutual cross-correlations, and on the invariance to the implants’time-in-service. The PITS demonstrated to be highly representative of thesuccess criteria, offering a fine scale from 0 to 10, and reversibility. Conclusion: The PITS withstood the tests. It responds to anexisting need in the field, is widely accessible and inexpensive, and, thus,shows promise for use in general dental practice.