Open bite in adult patients.

Anterior open bite (AOB) is characterized by the lack of overlap or contact between maxillary and mandibular incisors, while the posterior teeth are in occlusion. Correction of this malocclusion is challenging due to difficulties in determining and addressing the etiologic factors, and the high relapse rate. A multidisciplinary approach may be necessary, with participation of Orthodontics, Surgery and Speech Therapy, to achieve adequate esthetic and functional results for long term stability. The present paper discusses the treatment options for AOB, their advantages and implications.

Do premolar extractions necessarily result in a flat face? No, when properly indicated.

The esthetic benefits are among the main goals of orthodontic treatment; therefore, tooth extractions have been avoided as a protocol for orthodontic treatment because they may impair the facial profile. The present article discusses aspects as the magnitude and response of soft tissue profile due to changes in incisor positioning, and the effect of different sequences of premolar extraction. One case report illustrates the subject, with favorable and stable esthetic and occlusal outcomes five years after orthodontic treatment with extraction of second premolars.

Do premolar extractions necessarily result in a flat face? No, when properly indicated

Abstract The esthetic benefits are among the main goals of orthodontic treatment; therefore, tooth extractions have been avoided as a protocol for orthodontic treatment because they may impair the facial profile. The present article discusses aspects as the magnitude and response of soft tissue profile due to changes in incisor positioning, and the effect of different sequences of premolar extraction. One case report illustrates the subject, with favorable and stable esthetic and occlusal outcomes five years after orthodontic treatment with extraction of second premolars.

Resumo Os benefícios estéticos estão entre os principais objetivos do tratamento ortodôntico. Por isso, as extrações dentárias têm sido evitadas como protocolo de tratamento ortodôntico, pois podem prejudicar o perfil facial. No presente artigo, serão discutidos aspectos como a magnitude da resposta do perfil de tecidos moles em decorrência das mudanças na posição dos incisivos e os efeitos de diferentes sequências de extrações de pré-molares. Um caso clínico ilustrará o tema, com resultados estéticos e oclusais favoráveis e estáveis cinco anos após o tratamento ortodôntico com extrações de segundos pré-molares.

Conventional surgical-orthodontic approach with double-jaw surgery for a patient with a skeletal Class III malocclusion: Stability of results 10 years posttreatment.

This case report presents the treatment of a young man with a skeletal Class III malocclusion. He was treated with a conventional surgical-orthodontic approach in which 2 jaw surgeries were performed. The esthetic facial profile, pleasant smile, appropriate occlusion, and overall good treatment outcome remained stable 10 years after active orthodontic treatment.

Surgery first using skeletal anchorage with tandem mechanics for mandibular molar distalization.

This case report describes the orthodontic retreatment a patient with a skeletal Class III malocclusion. The clinical examination showed a concave profile caused by a retruded maxilla and a prognathic mandible, an occlusal cant, and absence of all first premolars. A surgery-first approach was combined with skeletal anchorage implants in the maxillary arch and tandem mechanics. The esthetic facial profile, pleasant smile, appropriate occlusion, and overall good treatment outcomes remained stable 5 years after active orthodontic treatment.

Orthodontic treatment for a patient with advanced periodontal disease: 11-year follow-up.

This case report demonstrates the interdisciplinary treatment of an adult patient with a Class II malocclusion, convex profile, incompetent lips, gummy smile, and advanced periodontal loss. Initial periodontal-endodontic treatment was followed by orthodontic and orthognathic surgical therapies. An esthetic facial profile, a pleasing smile, an appropriate occlusion, and overall good treatment outcomes, including the periodontal condition, remained stable 11 years after active orthodontic treatment.

Mini-implants: mechanical resource for molars uprighting.

INTRODUCTION: The early orthodontic treatment allows correction of skeletal discrepancies by growth control, and the elimination of deleterious habits, which are risk factors for the development of malocclusions, favoring for the correction of tooth positioning later in a second treatment stage. During development of teeth and occlusion, the mandibular second molars commonly erupt in the oral cavity after all other teeth of the anterior region. In their eruptive process there may be a condition known as tooth impaction, which precludes its complete eruption and requires proper uprighting treatment. The temporary anchorage devices allow disimpaction and movement of these teeth directly to their final position, without the need of patient compliance or reaction movements in other parts of the arch. OBJECTIVE: This paper aims at describing a case report of the treatment of a patient with Angle Class II malocclusion, performed in two phases, in which mini-implants were used for uprighting the impacted mandibular second molars.

Orthodontically induced eruption of a horizontally impacted maxillary central incisor.

This case report presents the clinical features and periodontal findings in a patient with a horizontally impacted maxillary central incisor that had been exposed and aligned after a closed-eruption surgical technique. By combining 3 treatment stages-maxillary expansion, crown exposure surgery, and induced eruption-the horizontally impacted incisor was successfully moved into proper position. The patient finished treatment with a normal and stable occlusion between the maxillary and mandibular arches, and an adequate width of attached gingiva, even in the area surrounding the crown. The 5-year follow-up of stability and periodontal health demonstrated esthetic and functional outcomes after orthodontically induced tooth eruption. Clinical evaluation showed that the treated central incisor had periodontal clinical variables related to visible plaque, bleeding on probing, width of attached gingiva, and crown length that resembled the contralateral incisor.

Periodontal ligament distraction: esthetics and occlusal stability at the 2-year follow-up.

Dental distraction is an orthodontic tooth movement technique that allows closure of extraction spaces, usually of premolars, in periods from 1 to 3 weeks, by bodily retraction of the canine. This article reports on canine distalization by using a distractor device obtained from a conventional hyrax screw. The patient was an adolescent boy, aged 17 years 9 months, who came to the clinic with the chief complaint of tooth crowding. The clinical examination showed a convex profile, retroclined and protruded maxillary incisors, buccally tipped and protruded mandibular incisors, and a Class I malocclusion. The treatment comprised extractions and rapid canine distraction procedures. Pretreatment, posttreatment, and 2-year follow-up records are shown and demonstrate that dental distraction is a viable alternative of treatment. With this treatment strategy, satisfactory results were obtained without additional anchorage devices, achieving an attractive smile and optimal occlusion. The main considerations about the treatment alternatives and their clinical concerns are discussed.

Mini-implants: mechanical resource for molars uprighting

INTRODUCTION: The early orthodontic treatment allows correction of skeletal discrepancies by growth control, and the elimination of deleterious habits, which are risk factors for the development of malocclusions, favoring for the correction of tooth positioning later in a second treatment stage. During development of teeth and occlusion, the mandibular second molars commonly erupt in the oral cavity after all other teeth of the anterior region. In their eruptive process there may be a condition known as tooth impaction, which precludes its complete eruption and requires proper uprighting treatment. The temporary anchorage devices allow disimpaction and movement of these teeth directly to their final position, without the need of patient compliance or reaction movements in other parts of the arch. OBJECTIVE: This paper aims at describing a case report of the treatment of a patient with Angle Class II malocclusion, performed in two phases, in which mini-implants were used for uprighting the impacted mandibular second molars.

INTRODUÇÃO: o tratamento ortodôntico precoce permite a correção das discrepâncias esqueléticas por meio do controle de crescimento e a eliminação de hábitos deletérios, que são fatores de risco para o desenvolvimento de más oclusões, que favorecem a correção do posicionamento dentário mais tardiamente, em uma segunda fase do tratamento. Durante o desenvolvimento da dentição e da oclusão, normalmente o segundo molar inferior chega à cavidade bucal após todos os dentes posicionados anteriormente a ele. Durante seu processo eruptivo, pode ocorrer uma condição chamada "impacção dentária", em que sua erupção completa é interrompida, exigindo tratamento apropriado para verticalização. Os dispositivos temporários de ancoragem permitem a desimpacção e a movimentação desses dentes diretamente às suas posições finais, sem a necessidade de cooperação do paciente e sem movimento de reação nas outras unidades da arcada. OBJETIVO: descrever o tratamento de um caso de má oclusão Classe II de Angle, realizado em duas fases, durante o qual foram utilizados mini-implantes para verticalização dos segundos molares inferiores impactados.

Expansão maxilar não cirúrgica em adultos: relato de caso / Nonsurgical maxillary expansion in adults: case report

A expansão alveolar rápida da maxila (EARM) é um método aceitável para corrigir a constrição maxilar moderada em adultos que não desejam realizar a expansão rápida da maxila assistida cirurgicamente (ERMAC). Nessa abordagem, a taxa de ativação do aparelho é diminuída para evitar complicações. Este relato demonstra uma expansão maxilar não cirúrgica utilizando um expansor higiênico dentossuportado em uma paciente de 31 anos e seis meses de idade que apresentava discrepância transversa, mordida cruzada unilateral esquerda e desvio de linha média. Um expansor do tipo Hyrax com 4 bandas foi ativado uma volta por dia e, após a evidência clínica de um diastema entre os incisivos centrais superiores, a paciente foi instruída a ativar o expansor duas vezes ao dia. Os aumentos de 4,5 mm e 2,5 mm nas distâncias intercaninos e intermolares foram suficientes para corrigir a má oclusão. Ao final do tratamento, uma aceitável expansão não cirúrgica dos segmentos bucais da maxila foi atingida com adequada intercuspidação transversa. Os resultados permaneceram estáveis 3 anos após a conclusão do tratamento. Foi possível concluir que a expansão foi suficiente para corrigir esta má oclusão sem alterações no plano mandibular e o tipo de aparelho e o protocolo de ativações foram corretamente indicados

Rapid maxillary alveolar expansion (RMAE) is an acceptable technique for the correction of moderate maxillary deficiency in adults that prefer not to undergo surgically-as-sisted rapid maxillary expansion (SARME). In RMAE, the expander activation rate is lower to avoid complications. This study describes a case of non-surgical maxillary expansion using a tooth-borne device in a patient aged 31 years and 6 months who had transverse deficiency, unilateral (left) crossbite and midline deviation. A Hyrax expander with 4 bands was activated one turn each day, and when a diastema between maxillary central incisors was clinically confirmed, the patient received instructions to activate it two times a day. Increases of 4.5 mm and 2.5 mm between canines and molars were enough to correct the malocclusion. When the treatment was completed, satisfactory nonsurgical expansion of buccal segments of the maxilla, as well as adequate intercuspation, was achieved. Results remained stable up to 3 years after the end of treatment. The expansion achieved was enough to correct malocclusion without changing the mandibular plane, and the expander and activation protocol were adequately indicated.

Conservative orthodontic treatment for a patient with a unilateral condylar fracture.

Trauma to the mandible often causes condylar fracture. This article reports the conservative treatment of a 10-year-old girl with a unilateral condylar fracture, highlighting the diagnostic aspects involved and the strategy used. The conservative approach used for this patient-bionator followed by full fixed orthodontic appliances-provided adequate esthetic and functional results. The outcomes throughout the 7-year follow-up and the remodeling process of the condyle observed in the panoramic radiographs proved the success of this treatment.

Tratamento ortodôntico-cirúrgico da assimetria facial esquelética: relato de caso / Orthodontic-surgical treatment of skeletal facial asymmetry: case report

INTRODUÇÃO: as assimetrias faciais representam um desequilíbrio entre as estruturas esqueléticas homólogas da face. A maioria das pessoas apresenta algum grau de assimetria facial, pois é rara a condição de perfeita simetria. Todavia, somente quando é perceptível aos olhos do paciente, essa assimetria passa a ser relevante. Em tal condição, a correção ortocirúrgica ou o tratamento ortodôntico são possibilidades normalmente adotadas. OBJETIVO: o presente trabalho, baseado em uma revisão de literatura, é ilustrado por um caso clínico cujo tratamento consistiu em cirurgia ortognática Le Fort I para avanço e rotação da maxila e, na mandíbula, o tratamento foi conservador. CONCLUSÃO: o conhecimento da queixa principal e da expectativa do paciente e exames de diagnóstico bem realizados são itens importantes na decisão do plano de tratamento e no sucesso do resultado final.

INTRODUCTION: Facial asymmetries consist of an imbalance between the homologous skeletal structures of the face. Most people present some degree of facial asymmetry, since a state of perfect symmetry is rare. This common asymmetry only becomes relevant when it is perceivable by the patient. In this situation, either orthodontic surgical correction or orthodontic treatment is normally chosen. OBJECTIVE: This study, based on literature review, has been illustrated by a case report comprising Le Fort I orthognathic surgery for maxillary advancement and rotation, with conservative treatment for the mandible. CONCLUSION: Knowledge of the patient's chief complaint and expectations, as well as proper diagnostic exams, are important factors to decide the treatment plan and for the final treatment outcome.

Banir o amálgama? - Relato de reabsorção radicular tratada cirurgicamente - 7 anos de proservação / Banishing amalgam? - Case report of a surgically treated root resorption - 7 years follow up

Na ausência de sintomas, a reabsorção radicular é diagnosticada, geralmente, durante exames radiográficos de rotina. O presente trabalho relata um caso clínico de um paciente do sexo masculino portador de reabsorção radicular no dente 23 e lesão periapical no dente 22, sendo que esse elemento dental já havia sido submetido à cirurgia prévia malsucedida. A reabsorção radicular do dente 23 foi tratada cirurgicamente e o dente 22 foi submetido a retratamento endodôntico e à nova cirurgia periapical. O caso apresentou silêncio clínico durante o período decorrido de sete anos. Também, serão analisadas, neste estudo, as razões para indicação de retratamento e para a escolha do amálgama como material para vedamento dessa reabsorção. Conclui-se que o diagnóstico e o tratamento do caso apresentado foram corretos, uma vez que o paciente se encontra satisfeito com a manutenção do seu dente, dispensando a necessidade de um implante ósseo integrado

In the absence of symptoms, root resorption is generally diagnosed during routine radiographic procedures. This work reports a clinical case of a male patient who presented root resorption in tooth 23 and periapical lesions in tooth 22, which had already underwent an unsuccessful previous surgery. The root resorption of tooth 23 was surgically treated and tooth 22 underwent endodontic retreatment and another periapical surgery. The case has presented clinical silence for a period of seven years. This work also analyzes the reasons behind the indication for retreatment and behind the choice for amalgam as sealing material. It is concluded that the diagnosis and treatment of the presented case was correct, since the patient expressed satisfaction with the maintenance of his tooth, excusing the need for an osseointegrated implant

Remoção de núcleo intrarradicular seguida de obturação do canal radicular simultânea à cirurgia apical: oito anos de proservação / Post root canal removal followed by root canal feeling simultaneous with periapical surgery: eight years follow up

Objetivo e relato de caso: O presente trabalho relata o caso clínico de uma paciente do sexo feminino com fístula no dente 12, a qual já havia sido submetida a duas cirurgias apicais. A obturação deficiente do canal radicular exigia retratamento endodôntico, que era dificultado pela presença de núcleo intrarradicular e obturação retrógrada de amálgama. Após a remoção do retentor intrarradicular e sanificação do canal de forma convencional, a paciente foi submetida a nova cirurgia parendodôntica, na qual foi realizada a ob-turação endodôntica no transoperatório cirúrgico. O caso apresentou silêncio clínico durante o período de oito anos. A radiografia com a evidência de reparação óssea na região comprovou o sucesso da intervenção na opção pelo tratamento. A decisão pelo tratamento mais adequado, realizada pelo profissional juntamente com o paciente, dependerá do cenário clínico específico e das características individuais do paciente, considerando os riscos e o custo-benefício das alternativas. Considerações finais: Conclui-se que o diagnóstico e o tratamento do caso apresentados foram adequados, uma vez que a paciente se apresentou satisfeita com a manutenção do seu dente, evitando a necessidade de implante osseointegrado.

Remoção de núcleo intrarradicular seguida de retratamento endodôntico: 13 anos de proservação / Intraradicular post and core removal followed by endodontic retreatment: thirteen-year follow-up

Introdução: O retratamento endodôntico, quando bem recomendado, possibilita a manutenção de peças dentárias. A evolução das técnicas e dos materiais endodônticos reduziu a indicação de recursos cirúrgicos mesmo nos dentes portadores de pinos intracanais. Relato de caso: Paciente de 31 anos relatou dor no dente 12 e, no exame radiográfico, constatou-se presença de lesão periapical nos dentes 12, 11 e 21, que já haviam sido submetidos à cirúrgica parendodôntica e portavam pinos intracanais, os quais foram removidos. Além disso, os canais radiculares sofreram retratamento. Conclusão: A técnica aqui exemplificada - remoção dos pinos e retratamento - comprovou ser bem indicada e eficiente, visto que, concluída a intervenção, 13 anos se passaram com silêncio clínico e radiográfico.

Introduction: Endodontic retreatment, when properly indicated, allows the maintenance of dental elements. The evolution of endodontic techniques and materials has reduced the indication of surgical procedures even for teeth with intracanal posts. Case study: A 31 year-old patient related pain in tooth #12. After radiographic examination, the presence of a periapical lesion in teeth #12, #11, and #21 was found, which had already undergone to paraendodontic surgery and placement of intraradicular post and core. Treatment comprises the removal of the intracanal post and core, and the respective root canals were endodontically treated. Conclusion: The technique here exemplified, intracanal post removal and retreatment, proved to be well indicated and effective, since, at the 13-year follow-up appointment, the teeth remained without clinical and radiographic findings.

Maxillary canine retraction with self-ligating and conventional brackets.

OBJECTIVE: To measure space closure during the retraction of upper permanent canines with self-ligating and conventional brackets. MATERIALS AND METHODS: Fifteen patients who required maxillary canine retraction into first premolar extraction sites as part of their orthodontic treatment completed this study. In a random split-mouth design, the retraction of upper canines was performed using an elastomeric chain with 150 g of force. The evaluations were performed in dental casts (T0, initial; T1, 4 weeks; T2, 8 weeks; T3, 12 weeks). The amount of movement and the rotation of the canines as well as anchorage loss of the upper first molars were evaluated. RESULTS: There was no difference between self-ligating and conventional brackets regarding the distal movement of upper canines and mesial movement of first molars (P > .05). Rotation of the upper canines was minimized with self-ligating brackets (P < .05). CONCLUSION: Distal movement of the upper canines and anchorage loss of the first molars were similar with both conventional and self-ligating brackets. Rotation of the upper canines during sliding mechanics was minimized with self-ligating brackets.

Influence of premolar extractions on the facial profile evaluated by the Holdaway analysis / Influência de exodontias de pré-molares no perfil facial avaliada pela análise de Holdaway

PURPOSE: This retrospective study aimed at assessing patients treated with extraction of premolars through cephalometry in lateral teleradiography, comparing the effect of different tooth extraction protocols on the facial profile. METHODS: For this study, 87 patients (31 boys and 56 girls) were selected from the private practices of three dentists certified by the Brazilian Board of Orthodontics and Facial Orthopedics. These patients were treated with fixed edgewise appliance and divided into three groups, according to the sequence in which premolars were extracted "Group 40" comprised 22 patients treated with extractions of the first two superior premolars, adopted as the control group; "Group 44" comprised 43 patients treated with extractions of the four first premolars; and "Group 45" comprised 22 patients treated with extractions of first superior premolars and second inferior premolars. The Holdaway analysis was used to quantify and compare the group profiles before and after treatment. RESULTS: Student's t-tests showed a profile improvement in all groups. When groups were compared, ANOVA showed that only the Inferior sulcus to the H line showed differences in incremental changes resulting from the treatment. Group 44 showed a significantly higher difference than Group 40. CONCLUSION: We conclude that the protocols produce similar facial appearances.

OBJETIVO: Este trabalho retrospectivo tem como proposta avaliar pacientes tratados com exodontias de pré-molares através de cefalometria em telerradiografia de perfil, comparando o efeito de diferentes protocolos de exodontias no perfil. METODOLOGIA: Oitenta e sete pacientes (31 meninos e 56 meninas) foram selecionados da clínica particular de três ortodontistas diplomados pelo Board Brasileiro de Ortodontia e Ortopedia Facial. Estes pacientes foram tratados com aparelho fixo Edgewise foram divididos em três grupos, compreendendo a sequência de exodontia de pré-molares empregada Grupo 40 compreendendo 22 pacientes tratados com exodontia de primeiros pré-molares superiores, Grupo 44 compreendendo 43 pacientes tratados com exodontia de quatro primeiros pré-molares e Grupo 45 compreendendo 22 pacientes tratados com exodontia de primeiros pré-molares superiores e segundos inferiores. A Análise de Holdaway foi utilizada para quantificar e comparar os perfis antes e após o tratamento dos grupos. RESULTADOS: O teste t-Student mostrou melhora no perfil em todos os grupos. Quando comparados entre si, ANOVA revelou que apenas a medida sulco lábio inferior em relação à linha H apresentou diferenças nas mudanças incrementais proporcionadas pelo tratamento, em que o grupo 44 apresentou uma diferença significativamente superior ao grupo 40. CONCLUSÃO: A partir dos resultados concluiu-se que os protocolos produzem aparências faciais semelhantes.

Traumatic injuries during the postoperative period after orthognathic surgery in patient with complete bilateral cleft lip and palate / Injúria traumática durante o período pós-operatório após cirurgia ortognática em paciente com fissura transforame incisivo bilateral

PURPOSE: Cleft lip and palate are the most common congenital deformities affecting the face and oral cavity. The procedure to be adopted when facing cleft lip and palate depends on their complexity, comprising treatment by an interdisciplinary team aiming at rehabilitation. Esthetic, functional and emotional implications occur in different manners and intensities, depending on the type of cleft. The aim of this paper is to guide professionals in this field, especially oral surgeons, for the treatment of patients with these congenital deformities and cases of postoperative complications. CASE DESCRIPTION: The present case illustrates the treatment of a patient with complete bilateral cleft lip and palate, who suffered facial trauma in the postoperative period after orthognathic surgery. The clinical and radiographic success could be observed two years after the trauma by fall. CONCLUSION: Patients submitted to orthognathic surgery are subject to postoperative complications. Infection, vehicle accidents, firearm accidents and domestic violence are among the most common causes of complications in the postoperative period. Knowledge on these problems allows the adoption of preventive measures to avoid serious complications mainly in patients with clefts who require an interdisciplinary team approach comprising multiple health care professionals.

OBJETIVO: As fissuras de lábio e palato representam as mais comuns das malformações congênitas que envolvem a face e a cavidade bucal. A conduta a ser tomada frente às fissuras de lábio e palato depende da severidade e complexidade das mesmas, através de um tratamento, por meio de uma equipe multidisciplinar, que vise à reabilitação. O propósito deste trabalho é fornecer orientação aos profissionais da área, especialmente, ao cirurgião-dentista, para realização do tratamento em pacientes com estes defeitos congênitos e em situações de complicações pós-operatórias. DESCRIÇÃO DO CASO: O caso clínico aqui relatado ilustra o tratamento de uma paciente portadora de fissura transforame incisivo bilateral completa de lábio e palato, que sofreu trauma facial no período de reabilitação, após a cirurgia ortognática. O sucesso clínico e radiográfico pôde ser observado dois anos após o trauma por queda. CONCLUSÃO: Pacientes que realizaram cirurgia ortognática estão sujeitos a complicações pós-operatórias; infecção, acidentes com veículo motor, armas de fogo, violência doméstica estão entre as causas mais comuns citadas de complicações no pós-operatório tardio. O conhecimento dessas intercorrências possibilita que medidas preventivas sejam adotadas para evitarem-se complicações graves principalmente em pacientes com fissuras que necessitam da abordagem de uma equipe interdisciplinar composta por profissionais de saúde.

Profile changes in premolar extraction / Alterações no perfil em extrações de pré-molares

PURPOSE: This retrospective study assessed patients treated with extraction of premolars by analysis of lateral cephalograms, comparing the effect of different tooth extraction protocols on the profile. METHODS: Eighty-seven patients were selected from the private practices of three orthodontists certified by the Brazilian Board of Orthodontics and Facial Orthopedics. These patients were treated with fixed edgewise appliances and divided into three groups according to the sequence in which premolars were extracted: "Group 40", maxillary first premolars (22 patients); "Group 44", both maxillary and mandibular first premolars (43 patients); and "Group 45", maxillary first and mandibular second premolars (22 patients). The Z angle and the Burstone line were used to quantify and compare the profiles before and after treatment. RESULTS: Student's t-test showed profile improvement in all groups, as the Z angle value was higher at treatment completion and the lip measurements were in agreement with the values recommended by Burstone. Analysis of treatment changes by the ANOVA did not reveal significant differences between groups. CONCLUSION: The protocols produced similar facial appearance at treatment completion.

OBJETIVO: Este estudo retrospectivo avaliou pacientes tratados com exodontias de pré-molares através da análise de telerradiografias, comparando o efeito de diferentes protocolos de exodontias no perfil. METODOLOGIA: 87 pacientes foram selecionados da clínica particular de três ortodontistas diplomados pelo Board Brasileiro de Ortodontia e Ortopedia Facial. Estes pacientes foram tratados com aparelho fixo Edgewise e foram divididos em três grupos, de acordo com a sequência de pré-molares extraídos: "Grupo 40", primeiros pré-molares superiores (22 pacientes); "Grupo 44", quatro primeiros pré-molares (43 pacientes); e "Grupo 45", primeiros pré-molares superiores e segundos inferiores (22 pacientes). O Ângulo Z e a Linha de Burstone foram utilizados para quantificar e comparar os perfis antes e após o tratamento. RESULTADOS: O teste t-student mostrou melhora no perfil em todos os grupos, visto que o valor do ângulo Z apresentou-se maior ao final do tratamento e as medidas dos lábios vieram ao encontro dos valores preconizados por Burstone. A análise das mudanças proporcionadas pelo tratamento pela ANOVA não revelou diferenças significativas entre os grupos CONCLUSÃO: Os protocolos produzem aparências faciais semelhantes ao final do tratamento.