Progression of periodontal tissue destruction at splinted/non‐splinted teeth

Abstract

The aim of the present investigation was to study whether splinting, i.e., immobilisation of teeth, may interfere with the rate of periodontal tissue destruction that can be accomplished by ligature placement and plaque accumulation, 5, 1-year-old, beagle dogs were included in the experiment. The mandibular 2nd and 3rd premolars and the 1st molar on both sides of the mandible were extracted. 2 titanium implants were installed in the sites of 3P and 1M, i.e., in the right quadrant of the mandible. 3 months later, abutment connection was performed and a fixed, gold splint, connecting the tooth and the implants, was inserted. The non-resilient splint was cemented in place on Day 0 and 4P was hereby immobilized. In each dog, the contralateral fourth premolar (P4) served as the non-splinted control tooth. Experimental periodontal tissue breakdown was initiated by placing cotton floss ligatures around the neck of 4P and P4 and by allowing the animals to accumulate plaque and calculus. Once every month, new ligatures were placed at the level of the receding gingival margin. The experiment was terminated on Day 180. Radiographs of 4P and P4 were obtained and biopsies sampled. The results of the measurements, made in the radiographs and the histological sections, disclosed that the splinting of the experimental teeth, failed to prevent or retard apical downgrowth of plaque and associated attachment loss. It was concluded that increased tooth mobility, within the limits of the present experiment, obviously did not establish conditions which favoured an enhanced destruction of the periodontal tissues in the beagle dog model.

Tooth mobility and resolution of experimental periodontitis

“…The present investigation demonstrated that in dogs allowed to form plaque, the placement of cotton floss ligatures at the neck of mandibular premolars initiated a process that resulted in (i) the formation of an infiammatory lesion which extended deep into the supracrestal connective tissue, (ii) extensive loss of alveolar bone, and (iii) markedly increased tooth mobility. These findings confirm data from similar experiments in the rat (Rovin et al, 1966), in the ferret (Fischer & Klinge 1994), in the monkey (e.g,, Kennedy & Poison 1973, Poison & Zander 1983, Holt et al 1988 and in the dog (e,g,, Ericsson et al, 1975, 1993 demonstrating that periodontal tissue breakdown in this model is dependent on (i) the mechanical irritation provided by the ligature and (ii) the establishment of a subgingival plaque.…”

Mucosal inflammation and incidence of crestal bone loss among implant patients: a 10‐year study

“…, ; Ericsson et al. ; Pontoriero et al. ) have documented that plaque formation at implant sites results in mucositis.…”

“…A number of studies in humans and experiments in animals (e.g. Berglundh et al 1992Berglundh et al , 2004Ericsson et al 1993;Pontoriero et al 1994) have documented that plaque formation at implant sites results in mucositis. In the present study, mucositis (BoP+) occurred in 88% of subjects and in 81% of all implant sites.…”

Combined Implant and Tooth Support: An Up-to-Date Comprehensive Overview

“…Studies on animals reported similar periodontal breakdown around teeth regardless of being splinted to implants or not [61, 83, 84]. Pesun et al [85] found that histology of periodontal ligament around teeth connected to implants was similar to control teeth with minimal inflammation and minimal remodeling.…”