Treatment of Class II open bite complicated by an ankylosed maxillary central incisor

Treatment of lateral open bite with vertical dentoalveolar distraction osteogenesis

“…14,16,20 Although 2-stage segmental osteotomies or corticotomies, first performed on the palatal side and repeated 3 weeks later on the buccal side, can provide a successful outcome, the advantage of distraction is that it is completed in a 1-stage procedure on the buccal side only, maintaining the lingual periosteum and mucosa. 23,26 Without interfering with the blood supply of the teeth and the alveolar segment, the distracted segment can be repositioned gradually under the control of the orthodontist. 20 Vertical traction of dento-osseous blocks can be achieved by nickel-titanium archwires, 16,17,20 vertical extrusion bends, 11 stainless steel archwires with T-loops, 18 or a simple distraction device.…”

“…In orthodontic treatments of adults and cleft palate patients, and in some special situations such as atrophic alveolar processes and ankylosed teeth, segmental osteotomies, 23-25 corticotomy-assisted orthodontic treatment, 26 and vertical distraction osteogenesis [11][12][13][14][15][16][17][18][19][20] are the surgical alternatives. The immediate repositioning of a tooth or teeth with the supporting bone through a 1-stage procedure of segmental osteotomy can risk the blood supply of the segment and can be limited by the mucosa's restricted ability to extend up to the vertical correction, 11,24 especially resulting in osseous and gingival margin problems; therefore, osteodistraction remains the therapy of choice to cover greater distances of correction, as for this patient.…”

Orthodontic treatment of severe anterior open bite and alveolar bone defect complicated by an ankylosed maxillary central incisor: a case report

“…Orthodontic treatment combined with luxation was a possible approach in this case, in spite of risk factors including fracture, recurrence of the ankylosis, and the need for endodontic treatment [ 17 ]. Another alternative was orthodontic treatment combined with corticotomy and distraction osteogenesis [ 18 , 19 ]. This would involve gradual distraction of the bony block along with the attached soft tissue to produce tissue regeneration; however, this patient was not willing to undergo surgery.…”

Alternativas ortodóncico-quirúrgicas para dientes anquilosados

“…A diferencia de la osteotomía, en la corticotomía, como su nombre lo indica, se hacen cortes en la cortical, manteniendo la integridad del endostio, el hueso medular y los tejidos capilares [45]. De esta manera, Hwang et al traccionan un incisivo central anquilosado en un paciente con mordida abierta severa, al que logran cerrarle la mordida ortodóncicamente con la técnica Meaw [45].…”

“…De esta manera, Hwang et al traccionan un incisivo central anquilosado en un paciente con mordida abierta severa, al que logran cerrarle la mordida ortodóncicamente con la técnica Meaw [45]. Con la ostectomía, se remueve en el caso de la anquilosis sólo el área de hueso fusionada [46].…”