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The Single‐Tooth Implant: A Viable Alternative for Single‐Tooth Replacement
Author(s) -
Mayer Todd M.,
Hawley Charles E.,
Gunsolley John C.,
Feldman Sylvan
Publication year - 2002
Publication title -
journal of periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.036
H-Index - 156
eISSN - 1943-3670
pISSN - 0022-3492
DOI - 10.1902/jop.2002.73.7.687
Subject(s) - dentistry , medicine , implant , masticatory force , maxilla , survival rate , mandible (arthropod mouthpart) , dental prosthesis , dentition , orthodontics , surgery , botany , biology , genus
Background: The use of dental implants for single‐tooth replacement cases introduces a challenge to the performance of these restorations. Clinical data suggest that single‐tooth implant restorations do not benefit from lateral support from the surrounding dentition as do bridged implants, and that these restorations are subjected to greater masticatory forces. Therefore, single‐tooth implants are exposed to an increased risk of failure. This prospective clinical trial was designed to evaluate the cumulative success rate of dual acid‐etched single‐tooth replacement implants in two clinical centers. Methods: The study protocol included 59 patients between 19 and 73 years. Implants were evaluated for mobility, infection, and crestal bone loss from 30.9 to 60 months. Results: Seventy‐one (71) implants were placed in 59 patients, 20 male and 39 female. Forty‐seven (47) were placed in the maxilla and 24 in the mandible. The percentages of anterior and posterior implants were 45.1 % and 54.9%, respectively. A total of 13 (18.4%) implants were placed in soft, poor quality (Type IV) bone. Beginning 1 month post‐implant placement, cases were followed for 30.9 to 60 months with a mean followup of 45.9 months. One implant failed (peri‐implant infection) yielding an overall success rate of 98.6%. Conclusions: This success rate for single‐tooth replacement dual acid‐etched implants compares favorably with bridged implants and with success rates of other single‐tooth implant studies. Dual acid‐etched implants performed well even under conditions of poor quality bone, where concomitant bone augmentation was performed, and when used for immediate replacement of extracted teeth. J Periodontal 2002;73:687‐693.