title: Evaluation of three different dental implants in ligature-induced peri-implantitis in the beagle dog. Part I. Clinical evaluation.
abstract: The purpose of this study was to clinically evaluate experimental peri-implant breakdown. Hydroxyapatite-coated, titanium plasma-sprayed, and machined titanium-alloy surfaces were investigated. Eighty-four implants were placed in 14 beagle dogs. Pocket probing depths and clinical attachment level and mobility measurements were made. Dogs were sacrificed at 3 and 6 months. All experimental implants showed a significant loss in clinical attachment level (P < .05). Increased pocket probing depths for experimental implants occurred during the first 2 months, after which a plateau was reached. At the 3- and 6-month evaluation, pocket probing depths at experimental implants were significantly increased (P < .05). No differences among the three implant types were noted for clinical attachment levels and pocket probing depths. In general, greater mobility was found with the titanium-alloy implants than with hydroxyapatite-coated and titanium plasma-sprayed implants (P < .025). In addition, mobility measurements were significantly greater for experimental titanium-alloy implants during the first 3 months (P < .05). Clinical attachment level measurements were most sensitive to peri-implant status. All implants were equally susceptible to ligature-induced peri-implant breakdown. Consequently, meticulous oral hygiene and regular maintenance care are prerequisites for successful implantology.
authors.affiliation: Department of Periodontics, University of Texas Health Science Center, San Antonio 78284-7894, USA.
authors.forename: H W
authors.initials: HW
authors.lastname: Tillmanns
authors.forename: J S
authors.initials: JS
authors.lastname: Hermann
authors.forename: D R
authors.initials: DR
authors.lastname: Cagna
authors.forename: A V
authors.initials: AV
authors.lastname: Burgess
authors.forename: R M
authors.initials: RM
authors.lastname: Meffert
mesh_terms: D000497:Alloys; D000818:Animals; D003722:Dental Alloys; D003758:Dental Implantation, Endosseous / Q000009:adverse effects*; D015921:Dental Implants / Q000009:adverse effects*; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention; D019232:Dental Restoration Failure; D018450:Disease Progression; D004198:Disease Susceptibility; D004285:Dogs; D017886:Durapatite; D005069:Evaluation Studies as Topic; D005500:Follow-Up Studies; D009910:Oral Hygiene; D017622:Periodontal Attachment Loss / Q000209:etiology; D010514:Periodontal Pocket / Q000209:etiology; D010518:Periodontitis / Q000209:etiology*; D013499:Surface Properties; D014025:Titanium
chemical_list: D000497:Alloys; D003722:Dental Alloys; D015921:Dental Implants; C031462:titanium alloy (TiAl6V4); D017886:Durapatite; D014025:Titanium