WebApr 10, 2024 · Objectives The objectives of this retrospective clinical study were to evaluate the efficacy of clear aligners on upper-incisor torque control, with the expectation of providing guidance for clinics. Materials and methods Pretreatment (T0) and posttreatment (T1) cone-beam computed tomography (CBCT) scans of 47 patients with a nonextraction … WebJun 1, 2024 · It has palatal crown torque in the maxillary anterior teeth and labial crown torque in the mandibular anterior teeth to produce an opposite and resistant force generated by intermaxillary Class ...
Influence of maxillary canine torque variations on the ... - PubMed
WebNov 18, 2013 · Your upper rectangular arch therefore should be narrowed slightly and have palatal crown torque on the molars. If a palatal arch is used to control the upper molars, then any size upper arch wire may be used. The upper anteriors should have labial crown torque. 2. Lower Arch: Ideally, lower second molars should be banded. WebDec 1, 2024 · [1,2] Appliances such as the quad helix, nickel-titanium (Ni-Ti) palatal expander, overexpanded archwire, and removable plates with expansion screws are typical treatment modalities. [ 3 , 4 ] However, a common side effect of dental expansion is uncontrolled buccal crown tipping, which generates high stress on the buccal alveolar bone crest and … tree physiology分区
Torque differences according to tooth morphology and …
WebMay 12, 2010 · A newly developed modular force–torque measuring device, which has recently been described in detail was used (Hahn et al. 2009a, b; Figure 1). ... the palatal crown contour is composed of a more pronounced concave and convex part. WebAn undersized beta-titanium 0.016 x 0.022-inch archwire/Warren spring combination for palatal crown torque in inverted 0.022-inch slots of passive self-ligating brackets kept on the same side ... WebJul 12, 2024 · Incisors prescribed for palatal root/labial crown torque will experience a resultant extrusive component of force. 21 This, coupled with the flexible nature of the … tree physiology oxford