O objetivo desta pesquisa foi comparar as alterações cefalométricas de pacientes com má oclusão de Classe II divisão 1, tratados com os aparelhos Jasper Jumper e Twin Force Bite Corrector, associados ao aparelho ortodôntico fixo. A amostra foi composta por 120 telerradiografias em norma lateral de 60 pacientes, os quais foram divididos em 3 grupos: Grupo Experimental 1, constituído por 20 pacientes com idade inicial média de 12,39 anos, tratados por meio do aparelho Jasper Jumper associado ao aparelho fixo, por um período médio de 2,42 anos; Grupo Experimental 2, contendo 20 pacientes com idade inicial média de 11,83 anos, tratados com o aparelho Twin Force associado ao aparelho fixo, com tempo médio de tratamento de 2,59 anos; Grupo Controle, composto por 20 jovens, com idade inicial média de 12,13 anos e observados por um período médio de 2,21 anos. As alterações foram comparadas entre os grupos, por meio da Análise de Variância e do teste de Tukey. Observou-se que ambos os tratamentos apresentaram um efeito restritivo na maxila, houve melhora significante da relação maxilomandibular nos dois protocolos de tratamento avaliados e promoveram rotação horária do plano oclusal. O grupo Jasper Jumper, promoveu uma significante limitação do desenvolvimento vertical dos molares superiores em relação aos outros grupos. Os incisivos inferiores exibiram maior protrusão e uma extrusão dos molares inferiores nos grupos 1 e 2. Ambos os aparelhos melhoraram significantemente a relação maxilomandibular, os trespasses horizontal, vertical e a relação molar. Os protocolos de tratamento promoveram retrusão dos lábios superiores. / The aim of this study was to compare the cephalometric changes in patients with Class II Division 1 malocclusion, treated with the Jasper Jumper and Twin Force Bite Corrector, associated with fixed orthodontic appliances. The sample consisted of 120 lateral cephalometric radiographs of 60 patients, divided into 3 groups: Experimental Group 1 comprised 20 patients with initial mean age of 12.39 years, treated with the Jasper Jumper appliance associated with device fixed for an average period of 2.42 years; Experimental group 2 with 20 patients with initial mean age of 11.83 years, treated with Twin Force unit associated with braces, with an average treatment time of 2.59 years; Control Group, composed of 20 individuals, average initial age of 12.13 years and observed for an average period of 2.21 years. The changes were compared between groups by ANOVA followed by Tukey test. It was observed that both treatments presented a restrictive effect on the maxilla; there was significant improvement in the maxillomandibular relationship in the two treatment protocols groups evaluated and clockwise rotation of the occlusal plane. The Jasper Jumper group, provided a significant limitation of the vertical development of the maxillary molars in relation to other groups. The lower incisors showed greater protrusion and extrusion of mandibular molars in groups 1 and 2. Both appliances provided significant improvement of maxillomandibular relationship, overjet, overbite and molar relationship. Groups 1 and 2 presented retrusion of the upper lip.

O objetivo desta pesquisa foi comparar as alterações cefalométricas de pacientes com má oclusão de Classe II divisão 1, tratados com os aparelhos Jasper Jumper e Twin Force Bite Corrector, associados ao aparelho ortodôntico fixo. A amostra foi composta por 120 telerradiografias em norma lateral de 60 pacientes, os quais foram divididos em 3 grupos: Grupo Experimental 1, constituído por 20 pacientes com idade inicial média de 12,39 anos, tratados por meio do aparelho Jasper Jumper associado ao aparelho fixo, por um período médio de 2,42 anos; Grupo Experimental 2, contendo 20 pacientes com idade inicial média de 11,83 anos, tratados com o aparelho Twin Force associado ao aparelho fixo, com tempo médio de tratamento de 2,59 anos; Grupo Controle, composto por 20 jovens, com idade inicial média de 12,13 anos e observados por um período médio de 2,21 anos. As alterações foram comparadas entre os grupos, por meio da Análise de Variância e do teste de Tukey. Observou-se que ambos os tratamentos apresentaram um efeito restritivo na maxila, houve melhora significante da relação maxilomandibular nos dois protocolos de tratamento avaliados e promoveram rotação horária do plano oclusal. O grupo Jasper Jumper, promoveu uma significante limitação do desenvolvimento vertical dos molares superiores em relação aos outros grupos. Os incisivos inferiores exibiram maior protrusão e uma extrusão dos molares inferiores nos grupos 1 e 2. Ambos os aparelhos melhoraram significantemente a relação maxilomandibular, os trespasses horizontal, vertical e a relação molar. Os protocolos de tratamento promoveram retrusão dos lábios superiores. / The aim of this study was to compare the cephalometric changes in patients with Class II Division 1 malocclusion, treated with the Jasper Jumper and Twin Force Bite Corrector, associated with fixed orthodontic appliances. The sample consisted of 120 lateral cephalometric radiographs of 60 patients, divided into 3 groups: Experimental Group 1 comprised 20 patients with initial mean age of 12.39 years, treated with the Jasper Jumper appliance associated with device fixed for an average period of 2.42 years; Experimental group 2 with 20 patients with initial mean age of 11.83 years, treated with Twin Force unit associated with braces, with an average treatment time of 2.59 years; Control Group, composed of 20 individuals, average initial age of 12.13 years and observed for an average period of 2.21 years. The changes were compared between groups by ANOVA followed by Tukey test. It was observed that both treatments presented a restrictive effect on the maxilla; there was significant improvement in the maxillomandibular relationship in the two treatment protocols groups evaluated and clockwise rotation of the occlusal plane. The Jasper Jumper group, provided a significant limitation of the vertical development of the maxillary molars in relation to other groups. The lower incisors showed greater protrusion and extrusion of mandibular molars in groups 1 and 2. Both appliances provided significant improvement of maxillomandibular relationship, overjet, overbite and molar relationship. Groups 1 and 2 presented retrusion of the upper lip.

Introduction: The objective of this retrospective longitudinal study was to assess and compare the surgical changes and stability of the maxilla, mandible, and mandibular condyle, in patients who have undergone surgery first approach (SFA) followed by conventional braces or Invisalign (Inv) treatment. Methods: Thirty patients had a cone beam computed tomography (CBCT) exam taken at three timepoints: T1 (presurgery), T2 (immediately after surgery), and T3 at the completion of orthodontics treatment. After the cranial base registration, twenty-seven landmarks were located on each time point using axial, sagittal, and coronal cross-sectional views in the ITK-SNAP software. In addition, seventeen skeletal angular and linear variables were measured using the 3D Slicer software. Result: In general, both Groups had similar sugical changes (T2-T1) and stability (T3-T2). There was a statistically significant longer postsurgical orthodontic time in the Fixed Group (x̅ = five months). Skeletally, comparing T3-T2 the B point showed a statistically significant inferior position in the Fixed Group compared to the Inv Group (1.3 mm), resulting in a larger increase in mandibular plane angle in the Fixed Group (x̅ = 2.7 degrees). Conclusion: The Fixed appliances and clear aligner therapy in the surgery first approach resulted in similar skeletal changes and stability, except for the mandibular plane angle, which showed a greater increase in the Fixed Group. This result may suggest that patients with hyperdivergent skeletal pattern could benefit from aligner therapy for the postsurgical orthodontic phase.

Introduktion: Ungefär en fjärdedel av alla barn och ungdomar födda under samma år genomgår någon form av behandling som innefattar förflyttning av tänder. Syfte: Primär fokus med denna studie är att undersöka om ett samband finns mellan gingival retraktion och användning av fast apparatur på avdelningen för Ortodonti, Malmö Högskola.Metod: Studiemodeller, intraorala bilder och klinisk undersökning (återbesök 2014) användes för att identifiera gingival retraktion med ja eller nej. Om det fanns gjordes en mätning. Försöksobjekt valdes från patienter som blivit färdigbehandlade 2008/2009. Resultat: Studiemodeller för 2008 visade färre gingivala retraktioner efter behandling p-värde, (p=0,0034 som är statistiskt signifikant). För lite data fanns från klinisk undersökning och intraorala bilder för att göra analays. Slutsats: Gingivala retraktioner verkar inte ha någon koppling med ortodontisk behandling på avdelningen för Ortodonti, Malmö Högskola. Kliniska intraorala foton är ett grovt mått diagnostiskt verktyg för att bedöma gingivala retraktioner. Det är baserat på begränsad data och inte slutgiltigt. Studie med större grupp av patienter behövs

Magister Scientiae Dentium - MSc(Dent) (Orthodontics) / Orthodontic treatment has the ability to improve the aesthetics and the function of patients. In order to create space, orthodontic treatment often requires removal of teeth. The most common teeth removed for orthodontic treatment are the premolars. It has become popular to remove second premolars in certain cases where the soft tissue profile should not be altered. The Damon self-ligating orthodontic system is renowned for not requiring dental extractions in the majority of cases. The effect of extractions on the soft tissue profile of patients, in conjunction with using the Damon system, has therefore not been researched. It is important to understand the effect that orthodontic treatment and extractions can have on the soft tissue profile of patients. This effect can accurately be determined by making use of the soft tissue cephalometric analysis, developed by Dr Reed A. Holdaway in 1983.

Objectif: Suite aux traitements avec aligneurs, une insuffisance de contacts postérieurs est souvent notée cliniquement: existe-t-elle réellement, se corrige-t-elle spontanément? Cette étude vise à comparer la qualité de l’occlusion statique chez des patients ayant été traités avec boitiers conventionnels ou par aligneurs, dès la dépose des appareils orthodontiques et après six mois de mise en place fonctionnelle. Matériel and Méthodes: La mise en place fonctionnelle de l’occlusion chez des sujets traités par boitiers conventionnels (GB, n=25) ou par aligneurs (GA, n=14) et par a été évaluée par un système d’analyse occlusale informatisée (T-scan 9), au moment de la dépose (T0), puis à 3 et 6 mois de contention (T3 et T6). Les sujets (41% de filles, âge moyenne de 19,38 ± 5,98 ans), étaient traités sans extractions, ni chirurgie, avec pour contention des fils collés ou appareils sans recouvrement occlusal. La symétrie et la simultanéité des contacts ainsi que la position antéro-postérieure du centre de forces (CF) étaient évalués. Résultats : À tout moment (T0, T3, T6), aucune différence statistiquement significative n’a été observée quant à la position antéro-postérieure du CF (p=0,854), la répartition ou la simultanéité des contacts, quelle que soit la modalité de traitement. Le CF était situé antérieurement chez les patients de sexe féminin à tout temps (p=0,002). La mise en place fonctionnelle semblait être terminée dès trois mois pour les deux groupes. Conclusion: La qualité de l’occlusion était comparable dans les deux groupes six mois après la dépose des appareils orthodontiques, signifiant l’absence d’influence du type de traitement à court terme. Le sexe féminin pourrait être associé à un CF plus antérieur même après six mois de mise en place fonctionnelle. / Objective: Following aligner therapy, a lack of posterior contacts is common and is expected to resolve with settling. The aim of the study was to compare the quality of occlusion and settling, immediately after treatment and during a retention period of six months, in patients treated with fixed appliance therapy or clear aligners. Materials and Methods: 25 patients treated with fixed appliances and 14 patients treated with aligners were evaluated by a digital occlusal analysis (T-Scan 9) at time of debonding (T0) and 3 and 6 months later (T3 and T6). Subjects (41% female, average age 19.38 ± 5.98) were treated without extraction or maxillofacial surgery using either bonded wires or removable appliances without occlusal coverage as retainers. Contact symmetry, simultaneity and the antero-posterior position of the Center of Force (COF) were assessed at the time of debonding, and after 3 and 6 months of retention. Results: At all times of evaluation, the COF position was not statistically different for both treatment modalities (p=0.854), but was located more anteriorly in female patients when compared to male patients (p= 0.002). Settling appeared to be completed by 3 months in both groups. Conclusion: The quality of the occlusion was comparable after 6 months of settling when treated with either treatment modality indicating no short-term effect of treatment type. Females maintained a more anterior COF after six months of retention.