Influence of surgical repositioning of mature permanent dog teeth following experimental intrusion: a histologic assessment

Abstract

The aim of this study was to evaluate, through histologic examination, the effect of surgical repositioning of intruded dog teeth upon the pulpal and surrounding tissues. Thirty teeth in 10 adult dogs, aged 2-3 years, were used. Fifteen teeth were intruded, surgically repositioned and fixed using orthodontics wire, composite resin, and enamel acid conditioning. All these teeth served as the experimental group. The remaining intruded teeth were not treated (control group). The animals were sacrificed to allow observations at 7, 15, and 30 post-operative days. The maxillary and mandibular arches were removed and processed for histologic exam. Based on the methodology and observed results, we concluded that: pulpal necrosis, external root resorption and ankylosis were common sequelae to severe traumatic intrusion; a careful immediate surgical repositioning of severed intruded permanent tooth with complete root formation has many advantages with few disadvantages.

Traumatic Intrusion of a Maxillary Canine Tooth: 3 Cases

“…9 Intrusion injury in human medicine is more likely to affect deciduous teeth than permanent teeth. [11][12][13][14] However, these three case reports, along with other case reports of luxation injuries in dogs, indicate that the canine and incisor teeth are the most likely to sustain traumatic luxation injury due to their rostral positioning and exposure in the oral cavity. There are few studies that analyze treatment and outcomes of intrusive injuries in animals.…”

Management of intrusive luxation of maxillary incisors with dens in dente: a case report

“…before and after 24 h, had no effect upon healing, except a slight worsening of marginal bone loss (26). before and after 24 h, had no effect upon healing, except a slight worsening of marginal bone loss (26).…”

“…The slower replacement root resorption consists of ankylosis and replacement of the root by alveolar bone. Reports have shown that repositioning surgically did not affect the risk of root resorption compared to other treatment modalities and that resorption is more likely due to the severity of injury and the root development rather than to the surgical procedure itself (20,26,27). Andreasen and Pedersen reported a total incidence of 86% of external resorption (38% inflammatory, 24% surface, and 24% replacement resorption).…”

“…'No repositioning' gave significant better healing in comparison with orthodontic repositioning and also had a more favorable outcome than surgical repositioning (26). Andreasen et al reported that the increasing age and root development increased the risk of marginal bone loss.…”

Use of Mineral Trioxide Aggregate in Surgical and Conventional Endodontics: A Report of Five Cases

“…Arch bar was used in this case because of associated alveolar fracture and extreme mobility of the adjacent teeth. An animal in vitro study 8 reported that surgical repositioning of severely intruded permanent teeth with complete root development resulted in more normal orientation of the periodontal fibers and consequently less replacement resorption as the fibers are under less tension with respect to the cementum and bone walls. In addition, Andreasen et al 9 favored surgical repositioning of moderate to severely intruded teeth with complete root development as it is potentially less time consuming, requiring fewer patient visits.…”