Improved super-elastic Ti-Ni alloy wire for treating adult skeletal class III with facial asymmetry: A case report.

BACKGROUND: Correcting severe skeletal class III malocclusion with facial asymmetry in adults through orthodontic treatment alone is difficult. CASE SUMMARY: In this case report, we describe orthodontic treatment and lower incisor extraction without orthognathic surgery for a 27-year-old man with a transverse discrepancy. The extraction sites were closed using an elastic chain. The use of intermaxillary elastics, improved super-elastic Ti-Ni alloy wire, and unilateral multibend edgewise arch wire was crucial for correcting facial asymmetry and the midline deviation. CONCLUSION: After treatment, the patient had a more symmetrical facial appearance, acceptable overjet and overbite, and midline coincidence. The treatment results remained stable 3 years after treatment. This case report demonstrates that a minimally invasive treatment can successfully correct severe skeletal class III malocclusion with facial asymmetry.

Lower incisor extraction therapy in a complex case with an ankylosed tooth in an adult patient: A case report.

This case report describes a successful orthodontic therapy of an adult female treated by mandibular central incisor extraction and vestibular fixed appliances. The patient presented a skeletal Class I with normodivergent facial pattern, Class II subdivision dental relationship, extremely deep Curve of Spee and severe overbite. Moreover, during the treatment, the upper left first molar does not respond to orthodontic forces due to tooth ankylosis, augmenting the difficulty of this case. Despite this, a good occlusal relationship on both sites and an optimal extraoral outcome have been achieved after a 26-months therapy. To our knowledge no case report with such entity of Curve of Spee with contemporary tooth ankylosis has been presented.

Tratamiento ortodóncico en paciente adulta con Periodontitis crónica controlada / Orthodontic treatment in an adult patient with controlled chronic periodontitis

RESUMEN Introducción: En pacientes adultos con periodontitis el tratamiento de Ortodoncia constituye un reto, por las condiciones biomecánicas que impone la edad, y el estado de afectación del periodonto; principal responsable de los movimientos ortodóncicos. Objetivo: Describir el tratamiento ortodóncico realizado en paciente adulta con periodontitis crónica controlada y los resultados conseguidos. Presentación del caso: Paciente femenina de 41 años, con periodontitis crónica tratada. Diastemas y extrusión en incisivos, pérdida de la inserción periodontal y exposición del cemento radicular. Apiñamiento incisivo inferior, con extrusión e incremento de la curva de Spee. Trauma oclusal interincisivo. El plan de tratamiento incluyó control de la periodontitis, la extracción de un incisivo inferior y la intrusión dentaria incisiva bimaxilar. El tratamiento duró año y medio. Los resultados fueron excelentes. Se devolvió la función perdida; se consiguió incrementar la inserción periodontal, con la consiguiente disminución de la movilidad dentaria. Se corrigió la estética afectada y se obtuvo la satisfacción de la paciente. Conclusiones: A partir de la aplicación del tratamiento de Ortodoncia se consiguió corregir las anomalías de posición dentarias y de la oclusión, devolver a la paciente adulta portadora de periodontitis crónica la estética perdida y una oclusión funcional. Las decisiones terapéuticas consideraron el estado del periodonto, el control de la enfermedad y la edad de la paciente. Las fuerzas aplicadas fueron extremadamente controladas y el tiempo de tratamiento el menor posible. La motivación y el cuidado de la higiene bucal contribuyeron a los resultados alcanzados.

ABSTRACT Introduction: The orthodontic treatment is a challenge in adult patients with periodontitis because of the biomechanical conditions imposed by age and the state of involvement of the periodontium, which is the main responsible for orthodontic movements. Objective: To describe the orthodontic treatment performed in an adult patient with controlled chronic periodontitis and to show the results obtained. Case Presentation: Forty-one years old female patient with chronic periodontitis. She presented diastemas and incisors extrusion, loss of periodontal insertion and exposure of the root cement, lower incisor crowding with extrusion and increase of the curve of Spee. She also had interincisive occlusal trauma. The treatment plan included the control of periodontitis, the removal of a lower incisor and the intrusion of bimaxillary incisor. The treatment lasted a year and a half. The results were excellent. The lost function was restored and periodontal insertion was increased with the consequent decrease in tooth mobility. The affected aesthetics was corrected obtaining patient satisfaction. Conclusions: From the application of the orthodontic treatment, it was possible to correct the dental position and occlusion anomalies and give the patient back the lost esthetics and a functional occlusion. Therapeutic decisions considered the state of the periodontium, the control of the disease and the age of the patient. The applied forces were extremely controlled and the treatment time was as short as possible. The motivation and care of oral hygiene contributed to the results achieved.

The aberrant extraction of a maxillary canine and two lower incisors.

Extractions are a common place in orthodontics. The present article discusses a rare case, in which a left maxillary canine along with two lower incisors was extracted. Atypical extractions such as these need to be duly justified and thought over before being carried out. In the case mentioned, all these teeth in question were ectopically erupted. When attempts were made to retract the canine in its right position, it exhibited gingival recession which would only go on increasing further as the distance from the transposed position in between the left central and lateral incisor to the original position was considerably large. It was planned that the 1st premolar would be converted to canine on completion of the treatment. The lower incisors too would have shown severe periodontal damage had attempts to align them was made. Not only were these two teeth lingually erupted but they also were rotated along their long axis. Derotation along with labial movement would have caused breakage of the supracrestal and transseptal fibers resulting in periodontal breakdown leading to mobility of these teeth. An esthetically and functionally balanced outcome was achieved following these extractions. In the upper arch, although the midline remained compromised, it was not worsened. In the lower arch alignment was achieved with preservation of the intercanine width. Complicated cases such as these require a thorough scrutiny of all available options. Whatever the treatment plan may be, the ultimate goal of functional and esthetic balance should be achieved.

Orthodontic management of a dilacerated central incisor and partially impacted canine with unilateral extraction - A case report.

AIM: To align a dilacerated maxillary central incisor and partially impacted canine with unilateral extraction in a young patient with skeletal deep bite. MATERIALS AND METHODS: A 14 year old male patient reported to the hospital with skeletal deep bite (basal plane angle-17°), severe horizontal pattern of growth (Go-Gn to Sn -22°), upright maxillary incisors (U1 to NA -26°) and retroclined lower incisors (L1 to NB -11°). The maxillary left central incisor was dilacerated, and the maxillary left canine was partially impacted. Unilateral extraction of the left maxillary premolar and left mandibular central incisor was done. A canine disimpaction spring was used to align the impacted canine. An anterior bite plane was given to open the bite. RESULTS: Superimposition of lateral cephalogram (T1, T2) revealed bite opening, normal overjet and overbite. There was backward rotation of the mandible and increase in lower anterior facial height. There was no evidence of root resorption or loss of vitality in the dilacerated tooth. Clinically the canine was well aligned in the arch. CONCLUSION: Orthodontic management of a dilacerated incisor can be done without root resorption or loss of vitality. The partially impacted canine was well aligned in the arch. Unilateral extraction can produce good treatment results.

Angle Class I malocclusion treated with lower incisor extraction.

In planning orthodontic cases that include extractions as an alternative to solve the problem of negative space discrepancy, the critical decision is to determine which teeth will be extracted. Several aspects must be considered, such as periodontal health, orthodontic mechanics, functional and esthetic alterations, and treatment stability. Despite controversies, extraction of teeth to solve dental crowding is a therapy that has been used for decades. Premolar extractions are the most common, but there are situations in which atypical extractions facilitate mechanics, preserve periodontal health and favor maintenance of the facial profile, which tends to unfavorably change due to facial changes with age. The extraction of a lower incisor, in selected cases, is an effective approach, and literature describes greater post-treatment stability when compared with premolar extractions. This article reports the clinical case of a patient with Angle Class I malocclusion and upper and lower anterior crowding, a balanced face and harmonious facial profile. The presence of gingival and bone recession limited large orthodontic movements. The molars and premolars were well occluded, and the discrepancy was mainly concentrated in the anterior region of the lower dental arch. The extraction of a lower incisor in the most ectopic position and with compromised periodontium, associated with interproximal stripping in the upper and lower arches, was the alternative of choice for this treatment, which restored function, providing improved periodontal health, maintained facial esthetics and allowed finishing with a stable and balanced occlusion. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO), as part of the requirements for obtaining the BBO Diplomate title.

Angle Class I malocclusion treated with lower incisor extraction

In planning orthodontic cases that include extractions as an alternative to solve the problem of negative space discrepancy, the critical decision is to determine which teeth will be extracted. Several aspects must be considered, such as periodontal health, orthodontic mechanics, functional and esthetic alterations, and treatment stability. Despite controversies, extraction of teeth to solve dental crowding is a therapy that has been used for decades. Premolar extractions are the most common, but there are situations in which atypical extractions facilitate mechanics, preserve periodontal health and favor maintenance of the facial profile, which tends to unfavorably change due to facial changes with age. The extraction of a lower incisor, in selected cases, is an effective approach, and literature describes greater post-treatment stability when compared with premolar extractions. This article reports the clinical case of a patient with Angle Class I malocclusion and upper and lower anterior crowding, a balanced face and harmonious facial profile. The presence of gingival and bone recession limited large orthodontic movements. The molars and premolars were well occluded, and the discrepancy was mainly concentrated in the anterior region of the lower dental arch. The extraction of a lower incisor in the most ectopic position and with compromised periodontium, associated with interproximal stripping in the upper and lower arches, was the alternative of choice for this treatment, which restored function, providing improved periodontal health, maintained facial esthetics and allowed finishing with a stable and balanced occlusion. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO), as part of the requirements for obtaining the BBO Diplomate title.

No planejamento ortodôntico de casos que incluem extrações como alternativa para solucionar o problema de discrepância de espaço negativa, a decisão crítica é determinar quais dentes serão extraídos. Devemos considerar vários aspectos, como a saúde periodontal, mecânica ortodôntica, alterações funcionais e estéticas, e estabilidade do tratamento. Apesar das controvérsias, a extração de dentes para solucionar apinhamentos dentários é uma terapêutica que tem sido utilizada há décadas. As extrações de pré-molares são as mais comuns, mas há ocasiões em que extrações atípicas facilitam a mecânica, preservam a saúde periodontal e favorecem a manutenção do perfil, que tende a se alterar desfavoravelmente devido às modificações faciais decorrentes da idade. A extração de um incisivo inferior, em casos bem selecionados, é uma abordagem eficiente; e a literatura descreve maior estabilidade pós-tratamento, quando comparada com a opção de extração de pré-molares. O presente artigo relata um caso clínico de uma paciente com má oclusão de Classe I de Angle e apinhamento anterior superior e inferior, face equilibrada e perfil harmonioso. A presença de recessões gengivais e ósseas limitava grandes movimentações ortodônticas. Os molares e pré-molares estavam bem relacionados, e a discrepância concentrava-se principalmente na região anterior da arcada dentária inferior. A extração de um incisivo inferior em posição mais ectópica e com periodonto comprometido, associada a desgastes interproximais nas arcadas superior e inferior, foi a alternativa de escolha para o tratamento, que restabeleceu a função, proporcionando melhoria da saúde periodontal, manteve a estética facial, e permitiu a finalização com uma oclusão estável e equilibrada. Esse caso foi apresentado à diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO), como parte dos requisitos para obtenção do título de Diplomado pelo BBO.