A novel acrylic orthodontic device for treatment of linguoverted mandibular canine teeth in small dogs.

Linguoverted mandibular canine teeth (LMC) is a common malocclusion in dogs. Several inclined bite-plane techniques using acrylic resin have been introduced to correct LMC in dogs. Although these techniques have suggested modifications to overcome shortcomings, there are still limitations; e.g., high technical sensitivity, as the viscous acrylic resin must still be fabricated in the oral cavity. The authors developed a novel method for small-breed dogs that uses a doughy acrylic resin form to achieve an easy intraoral design and extraoral fabrication. Eight small-breed dogs were presented to evaluate and treat malocclusion causing palatal trauma. First, a Class-1 malocclusion with linguoversion of the mandibular canine teeth (6 dogs with unilateral LMC and 2 dogs with bilateral) was diagnosed based on oral examination. Dogs were treated with the new method using a doughy acrylic resin form for 6 to 7 wk and had posttreatment follow-up 1 y after the procedure. All treated canine teeth were in correct positions 1 y after the appliances were removed. Key clinical message: The authors believe that the new method using a doughy acrylic resin form could be a good alternative for veterinarians to use when treating LMC.

Un nouveau dispositif orthodontique en acrylique pour le traitement des canines mandibulaires linguoverties chez les petits chiens. Les canines mandibulaires linguoverties (LMC) sont une malocclusion courante chez le chien. Plusieurs techniques de plan de morsure incliné utilisant de la résine acrylique ont été introduites pour corriger la LMC chez le chien. Bien que ces techniques aient suggéré des modifications pour surmonter les lacunes, elles présentent encore des limites; par exemple, une sensibilité technique élevée, car la résine acrylique visqueuse doit encore être fabriquée dans la cavité buccale. Les auteurs ont développé une nouvelle méthode pour les chiens de petite race qui utilise une forme pâteuse de résine acrylique pour obtenir une conception intra-orale et une fabrication extra-orale faciles. Huit chiens de petite race ont été présentés pour évaluer et traiter une malocclusion provoquant un traumatisme palatin. Tout d'abord, une malocclusion de classe 1 avec linguoversion des canines mandibulaires (6 chiens avec LMC unilatérale et 2 chiens avec bilatérale) a été diagnostiquée sur la base d'un examen oral. Les chiens ont été traités avec la nouvelle méthode en utilisant une forme pâteuse de résine acrylique pendant 6 à 7 semaines et ont fait l'objet d'un suivi post-traitement 1 an après la procédure. Toutes les canines traitées étaient dans la bonne position un an après le retrait des appareils.Message clinique clé:Les auteurs estiment que la nouvelle méthode utilisant une forme pâteuse de résine acrylique pourrait être une bonne alternative que les vétérinaires pourraient utiliser lors du traitement du LMC.(Traduit par Dr Serge Messier).

Use of an intraoral scanner to evaluate orthodontic treatment for dental malocclusion in a dog.

OBJECTIVE: In human dental practice, intraoral scanners (IOSs) are increasingly used to evaluate the oral cavity. However, there have been no reports concerning evaluation of the canine oral cavity using IOSs in veterinary dentistry. In this case, optical impressions obtained with an IOS were used for 3-D evaluation of the orthodontic treatment outcome. Additionally, few reports have addressed the optimal orthodontic force for canine teeth. Therefore, this case explored whether sufficient tooth movement into the extraction site could be achieved with a lighter orthodontic force than previously reported. ANIMAL: An 8-month-old spayed female dog. CLINICAL PRESENTATION, PROGRESSION, AND PROCEDURES: A retained right maxillary third deciduous incisor (503) caused distoversion of the right maxillary third permanent incisor (103), leading to dental malocclusion that involved contact between 103 and the right mandibular canine teeth. TREATMENT AND OUTCOME: All retained deciduous teeth were extracted. Mesial tipping movement of 103 into the extraction site of 503 was achieved with light orthodontic force using an elastomeric chain. An IOS was used to construct 3-D optical impression data from oral stone models taken before and after treatment, and tooth movement was evaluated. The results showed that 103 had sufficient tipping movement and no anchorage loss; comfortable occlusion was achieved. In addition to crown length extension, labioversion and mesioversion of maxillary incisors (other than 103) were observed. CLINICAL RELEVANCE: Detailed intraoral evaluation with optical impressions was beneficial in the orthodontic treatment of a dog. Light orthodontic force may be sufficient for movement into the extraction site.

Assessment of Temporary Crown Extensions to Correct Linguoverted Mandibular Canine Teeth in 72 Client-Owned Dogs (2012-2016).

A search of the medical and dental records at Evidensia Lørenskog Dyreklinikk, in Lørenskog, Norway, was conducted to identify dogs that received temporary crown extensions (TCEs) to correct linguoverted mandibular canine (LMC) teeth over a 54-month investigation period (2012-2016). Criteria for inclusion into the study were the presence of complete medical and dental records, pre- and postoperative clinical photographs and intraoral radiographs of the affected canine teeth, adequate information pertaining to the procedures performed, and at least 1 follow-up >3 months after appliance removal. Seventy-two dogs with LMC teeth were treated with TCE. Thirty-nine breeds were represented in this study. Mean age at the time of appliance installation was 6.4 (range, 4.7-13.4 months [median, 5.9 months] months). Fifty-three (73.6%) dogs presented with class I malocclusion, 14 (19.5%) dogs with class II malocclusion, and 5 (6.9%) dogs with class III malocclusion. Twenty-five (34.7%) dogs were considered to have mild, 32 (44.4%) dogs to have moderate, and 15 (20.8%) dogs to have severe mandibular canine malocclusion. The TCE was combined with other treatment modalities (active orthodontics, extraction of nonstrategic teeth, gingivectomy, and inclined bite plane and ball therapy) to correct mandibular canine tooth malocclusions in 19 (26.4%) dogs. Fractured or detached crown extensions were seen in 9 (12.5%) dogs. Soft tissue ulceration or inflammation was seen in 7 (9.7%) dogs. The mandibular canine teeth occlusion resolved completely with self-retaining, functional, nontraumatic occlusion in 56 (77.8%) dogs. Fifteen dogs (20.8%) resolved with functional, nontraumatic occlusion, but the mandibular canine teeth were too short to be perfectly self-retained, thus left with 1- to 2-mm crown extensions for permanent retention. In 1 (1.4%) dog, both mandibular canine teeth relapsed almost back to original position. The results show that TCE is a viable treatment option to correct LMC teeth in young dogs.

Management of Mesioverted Maxillary Canine Teeth and Linguoverted Mandibular Canine Teeth.

Mesioverted maxillary canine teeth in combination with linguoverted mandibular canine teeth are a common ramification of persistent deciduous maxillary and mandibular canine teeth. Without the physical presence of the mandibular canine teeth, the maxillary third incisor and canine teeth diastemata are frequently narrowed. The creation of normal occlusion requires treatment of all 4 canine teeth; the mandibular canine teeth must be tipped labially and the maxillary canine teeth must be tipped and/or partially translated distally. This case report discusses the novel integration of 2 well-described orthodontic techniques to simultaneously treat both mesioverted maxillary canine teeth and linguoverted mandibular canine teeth, achieving a comfortable, functional occlusion.

Staged orthodontic movement of mesiolinguoversion of the mandibular canine tooth in a dog.

A 10 mo old Sapsaree dog presented for evaluation and treatment of malocclusion causing palatal trauma. A class III malocclusion with mesiolinguoversion of the 404 and enamel hypoplasia was diagnosed based on oral examination. It was decided to attempt orthodontic correction of the mesiolinguoverted tooth using an elastic chain and inclined bite plane technique with crown restoration of the enamel hypoplasia teeth. One year after the orthodontic correction and composite removal, the mesiolinguoverted right mandibular canine tooth was moved to an acceptable location within the dental arch and the locally discolored right maxillary canine tooth was vital.

Elastic training for the prevention of mandibular drift following mandibulectomy in dogs: 18 cases (2005-2008).

OBJECTIVE: To describe a noninvasive method for preventing mandibular drift (MD) after mandibulectomy in dogs. STUDY DESIGN: Technique description and case series. ANIMALS: Dogs (n=18) that had mandibulectomy involving resection of a portion of the mandible caudal to the 2nd mandibular premolar tooth. METHODS: One orthodontic button was attached to the lingual aspect of the canine tooth of the intact mandible and 1 to the buccal aspect of the ipsilateral maxillary 4th premolar tooth. An orthodontic elastic rubber chain was attached to the buttons creating tension sufficient for maintaining normal occlusion. The rubber chain was replaced weekly by the clients. Follow-up appointments were scheduled 2, 6, 10 weeks postoperatively and monthly thereafter if indicated. The appliance was removed when dogs had resumed normal occlusion of the canine teeth. RESULTS: All dogs maintained normal occlusion, normal jaw function, had no apparent disfigurement, and resumed preoperative activity levels while wearing the appliance. Eight dogs achieved temporomandibular joint stability and normal occlusion 4.5-6 months postoperatively and 8 did not, resulting in MD. One dog was lost for follow-up and 1 was euthanatized. CONCLUSION: Elastic training using orthodontic buttons and power chain is a viable option for prevention of MD but requires good client compliance. More data and longer follow-up are required to determine the long-term mandibular stabilizing potential of this technique. CLINICAL RELEVANCE: Elastic training is a quick, simple, cost-effective and noninvasive technique, preserving normal occlusion and function in many dogs after mandibulectomy.

Orthodontic correction of a base narrow mandibular canine tooth in a cat.

A 6-month-old cat was diagnosed with a lingually displaced mandibular canine tooth causing palatal trauma. This case report describes the correction and outcome for orthodontic movement of the left mandibular canine tooth.

Colagem de "brackets" ortodônticos metálicos com dyract em esmalte bovino: resistência ao cisalhamento em funçäo do uso ou näo de condicionamento ácido e de "primer" / The metallic orthodontic bracket bonding with Dyract in bovine enamel the shear bond strength with or without acid conditioning \"Primer\"

O objetivo deste trabalho foi avaliar a resistência ao cisalhamento da colagem de brackets ortodônticos metálicos com o compômero Dyract (De Trey - Dentsply) em esmalte bovino, com condicionamento ácido seguido ou näo de Primer PSA (respectivamente os grupos A e B), ou sem condicionamento ácido seguido ou näo de Primer PSA (respectivamente os grupos C e D). Nas quatro situaçöes (grupos A, B, C e D), os brackets foram colados de acordo com a maneira convencional. Os resultados relativos à resistência ao cisalhamento em kgf/cm2 foram: grupo A, 108,24; grupo B, 78,04; grupo C, 98,51; e grupo D, 21,93. Conclusäo: houve diferença estatística entre os grupos; exceto entre os grupos A e C

Orthodontic correction of lingually displaced canine teeth in a young dog using light-cured acrylic resin.

Lingually displaced canine teeth is a common malocclusion condition in dogs, the treatment of which has been described. Several of the previously reported treatment regimens involve the use of potentially harmful (toxic and/or dangerously exothermic) substances (methylmethacrylate) or require separate anesthetic episodes to make impressions and place the appliance. In this case, a dog was treated with directly placed appliances made of non-heat generating light-cured resin. Treatment required only one anesthetic episode to place the appliances and one more to remove them.

Lingually displaced mandibular canine teeth: orthodontic treatment alternatives in the dog.

Lingual displacements of mandibular canine teeth often occur following retention of deciduous canine teeth. This condition often results in trauma of occlusion to the lingual aspect of the maxillary canine tooth and the further development of a periodontal pocket or an oronasal fistula. This condition can be corrected using orthodontic appliances. The purpose of this paper is to discuss and illustrate the various alternatives available for correction of this common malocclusion in dogs.

Anterior crossbite correction in a dog using a lingual bar, a labial bow, lingual buttons, and elastic threads.

Anterior crossbite occurs as a result of several conditions. These conditions include retained deciduous teeth, over-crowding, trauma to developing permanent tooth buds, and trauma to erupted teeth. Treatment includes the use of orthodontic appliances and materials to correct the occlusal relationship. This case illustrates the use of a maxillary labial bow, a mandibular lingual bar and lingual buttons to correct an anterior crossbite in a dog.

Use of a facemask to protect the intra-oral area in cynomolgus monkeys.

A custom fiberglass facemask was designed for cynomolgus monkeys to protect an orthodontic appliance. The mask was constructed from impressions and models made of the animal's head. It prevented the fingers from entering the mouth to dislodge the intra-oral appliances. The facemask permitted normal physical activity, eating, and drinking.