1,720,999 research outputs found
Night-time 3D-printed aligners and intermaxillary elastics for treatment of an adolescent Class II subdivision patient
No full textDespite the increased demand for clear aligners in recent years, the ex- pense and the need for nearly full-time wear may discourage their use by patients and clinicians. Two further limitations are the apparent lack of efficacy of aligners in treating severe malocclusions and the high level of patient cooperation required
Skeletal anchorage for strategic treatment of hyperdivergent Class III malocclusion in adult patients
No full textWhen an adult patient exhibits a Class III malocclusion with both skel- etal and dental components, orthognathic surgery may be the only way to obtain both an ideal occlusion and an esthetic profile.1 Surgery requires a highly motivated patient, however, and is often declined because of the associated biological and financial costs
Open-coil mousetrap for labially impacted canine recovery
No full textMaxillary canine impaction affects 2-3% of the general population and has been identified as a risk factor for cyst development, canine ankylosis, and root resorption of adjacent teeth. Labially impacted canines are generally associated with crowding and arch restriction, but a recent study has found that they are also present in a small but not inconsiderable number of individuals without anterior crowding
Lower incisor extraction therapy in a complex case with an ankylosed tooth in an adult patient: A case report
No full textThis 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. © 2020 CE
Class III treatment with skeletal alternating rapid maxillary expansion and constriction protocol and facemask followed by clear aligners
No full textClass III malocclusions can be caused by a combination of skeletal factors including maxillary retrusion, mandibular protrusion, or both, with a strong genetic influence. The typical Class III skeletal imbalance is
established early in life and worsens over time, with no spontaneous correction, and should therefore be treated as early as possible to take advantage of the greater responsiveness of the circummaxillary suture
Treatment of skeletal Class III malocclusion in adolescents using miniscrew-supported orthopedic and fixed orthodontic appliances
No full textSkeletal Class III malocclusion is characterized by maxillary retru- sion, mandibular protrusion, or a combination of the two.1,2 This type of malocclusion is among the most challenging for orthodontists to treat, since unfavorable growth will compromise any clinical improve- ments in 20-25% of patients.3 Fac- tors affecting the success of treat-
ment include the patient’s age and sex, a family history of Class III malocclusion, and the severity of the sagittal discrepancy
The Hybrid Aligner Approach for Extrusion and Rotation of Posterior Teeth
No full textThe “hybrid technique” refers to any combination of clear aligner therapy and fixed appliances. It is commonly em- ployed in patients with deep bites and mandibular spacing, using upper clear aligners and lower fixed appliances. This Pearl demonstrates a hybrid method for extrusion of maxillary second molars. I have found a similar approach useful in uprighting mandibular second molars
Two-phase treatment of a Class III with severe anterior open bite and hyperdivergent growth pattern: A digital workflow option
No full textPatients with anterior open bite tend to exhibit significant skeletal and dentoalveolar maxillary transverse constriction
Skeletally anchored running-loop technique for mandibular first-molar uprighting
No full textAgenesis or loss of a lower second premolar can lead to mesial tipping of the lower first molar. This Pearl describes a molar-uprighting spring that is supported with indirect miniscrew anchorage and segmental posterior fixed appliances
Nonsurgical treatment of an adult patient with severe transversal skeletal discrepancy: Tooth bone-borne tandem expander and hybrid aligner approach
No full textBackground: Although they have proven effective in the resolution of mild to moderate malocclusions, aligners demonstrate substantial limitations. More complex malocclusions therefore require a combination of auxiliaries, or a hybrid approach involving both aligners and fixed appliances, such as miniscrew-supported appliances or sectionals. This case report presents a 25-year-old female patient with a severe transversal discrepancy associated with an anterior open-bite tendency effectively treated with a tooth bone-borne palatal expander characterized by two expansion screws (tandem expander) and a hybrid treatment with aligners. Methods: After accurate matching between the pretreatment cone-beam computed tomography scan and digital models, four self-drilling miniscrews were inserted palatally using a computer- aided design and computer-aided manufacturing surgical template to guide their correct and safe placement, and a tooth bone-borne appliance was fitted. After this first phase, the hybrid clear aligner approach was used to obtain alignment, leveling, and arch coordination, with the use of a partial lingual fixed appliance. Results: Transverse maxillary deficiency was corrected, crowding has been resolved, Class I molar and canine relationship were obtained, and marginal ridges has been aligned. Conclusions: Double jackscrew of the tandem expander enabled effective expansion of both the posterior segments as required to correct the skeletal discrepancy and the anterior region, thus relieving the dental crowding. Lingual sectional appliances have been shown to increase the effectiveness of clear aligners which, on the other hand, have been shown to be effective in closing the anterior bite by retroclination of the maxillary and mandibular incisors and, only minimally, by extrusion movements
- …
