Skeletal Class lll Severe Openbite Treatment Using Implant Anchorage

Abstract

Abstract:A female patient with a skeletal Class III severe anterior openbite was treated using miniplates as the anchorage. The patient was 15 years and 10 months of age when she reported to our university hospital with a chief complaint of anterior openbite and reversed occlusion. The patient had an anterior openbite with an overjet of Ϫ3.0 mm and overbite of Ϫ5.0 mm and a Class III molar relationship. The cephalometric analysis showed a skeletal Class III relationship (ANB 0Њ). After the extraction of the bilateral mandibular third molars, miniplates were placed in the mandibular external oblique line. The mandibular dentition was retracted using elastic chain and miniplates. After treatment, an Angle Class I molar relationship was achieved and overjet and overbite had become 2.0 mm and 1.5 mm. A good facial appearance and occlusal relationship were obtained. The total active orthodontic treatment period was 23 months. Wrap-around type retainers were placed on both jaws and a lingual bonded retainer was also attached in the mandibular incisors. After 1 year of retention, the occlusion was stable, and a good facial profile was also retained. The mandibular deviation to the left was improved and the strain in the circumoral musculature during lip closure disappeared. An appropriate interincisal relationship was achieved by the uprighting of mandibular dentition without changing the vertical intermaxillary relationship. A panoramic radiograph showed no marked root resorption. Our results suggest that implant anchorage is useful for correction of skeletal Class III severe anterior openbite cases.

Relationships of maxillofacial morphology and malocclusion with handgrip strength in adult women

“…This means that subject with both a large gonial angle and a small overbite or a crossbite/scissor bite had low HS, and HS may not depend on degree of gonial angle in subjects without those types of malocclusion. Reportedly, since open bite and crossbite or scissor bite are associated with MOF and OCA, low MOF/small OCA by those malocclusions may relate to low HS. Thus, the relationship between malocclusion and low HS may be an early indicator of general health.…”

“…In a measurement of physical function, HS is used as a convenient and useful measurement method, and collated with lower arm and leg strength . On the other hand, MOF and OCA is associated with maxillofacial morphology, such as high mandibular plane (Mp) angle and long face, and with malocclusion such as open bite, posterior crossbite and scissor bite . However, the relationships between maxillofacial morphology/malocclusion and HS remain unclear.…”

Dental compensation for moderate Class III with vertical growth pattern by extraction of the lower second molars

“…The objective of extracting the premolars is to mesialize the molars and to allow anterior rotation of the mandible [25]. The difficulty encountered when moving the molars forward lies in preventing extrusion during mesialization, which is especially difficult to control in growing children.…”

“…Das Ziel bei der Extraktion der Prämolaren liegt darin, die Molaren zu mesialisieren und der Mandibula eine anteriore Rotation zu ermögli-chen [25]. Die Schwierigkeit bei der Mesialisierung der Molaren liegt in der Vermeidung der Extrusion während der Mesialisierung, die besonders während des Wachstums schwer zu kontrollieren ist.…”

Corticotomy for Correction of Skeletal Anterior Open Bite Using Miniplates as Skeletal Anchorage (A Clinical and Cone Beam Comparative Study)

“…According to previous case reports (26,39) M-D angulations reflected on the anterior overjet relation. It was reported that overjet was improved by distally inclining the mandibular molars using implants as orthodontic anchorage, and overbite was improved by extruding the anterior teeth (39) . Accordingly, this might be another important factor for mal-perfection of the anterior open bite closure of the present cases.…”