Susiane Allgayer

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.

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

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 patients chief complaint and expectations, as well as proper diagnostic exams, are important factors to decide the treatment plan and for the final treatment outcome.

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.

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.

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

&NA; 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. HIGHLIGHTSA 19‐year‐old man had a skeletal Class III malocclusion.Conventional surgical‐orthodontic approach included 2 jaw surgeries.Good outcomes remained stable 10 years after active orthodontic treatment.

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

&NA; 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. HighlightsA skeletal Class III malocclusion was treated with surgery, skeletal anchorage, tandem mechanics.Surgery‐first approach produces rapid profile improvement.Tandem mechanics supported by skeletal anchorage reduce total treatment time.

Cytokines in crevicular fluid and orthodontic force: a systematic review

OBJECTIVE: This paper aimed to analyze studies in the literature addressing the role of cytokines in the gingival crevicular fluid (GCF) in the orthodontic treatment. METHODS: Several databases were surveyed using both MESH terms and free terms. Additional studies were obtained by reference tracking. This review was registered in PROSPERO, and the procedures foreseen by its statement were followed. Data were obtained from the included studies addressing the orthodontic mechanics, GCF sampling/handling methods, and cytokine measurements. Clinical studies written in English were browsed. Papers were selected by one reviewer and checked by a second investigator. RESULTS: A total of 115 articles were identified, among which 25 were selected for detailed analysis. Common drawbacks consisted mainly of inadequacies in the study design (e.g. short duration and small number of study subjects). The most consistent result was a peak of cytokine levels at 1 d. Associations were observed between prostaglandin E2 (PGE2) and interleukin-1β (IL-1β) and pain, velocity of tooth movement, and treatment mechanics. Interleukin-1b and PGE2 showed different patterns of up-regulation, with IL-1β being more responsive to mechanical stress and PGE2 more responsive to synergistic regulation of IL-1β and mechanical force. The results support the use of light continuous forces for orthodontic treatment. CONCLUSION: There was a tendency of maintenance of relatively high IL-1β levels for longer periods with the use of light continuous forces, which might decrease the frequency of activation. These outcomes provide evidence at the cellular level for the utilization of light continuous forces.