China
Africa
Explore chapters and articles related to this topic
Segmental surgery of the jaws
Published in John Dudley Langdon, Mohan Francis Patel, Robert Andrew Ord, Peter Brennan, Operative Oral and Maxillofacial Surgery, 2017
The anterior fragment may be moved upwards, downwards, rotated and set back. An additional mid-line osteotomy allows for expansion or elimination of a central diastema. Most importantly, however, this allows for correct positioning of the canines by the rotation of both anterior fragments slightly by pulling the canines down. At present, this osteotomy is mainly carried out to correct an extremely reversed curve of Spee by intruding the anterior segment, i.e. in Class II division 2 anomalies. For this reason, the Wunderer approach is to be preferred.
The importance of controlling vertical movement of posterior teeth for a Class II malocclusion in a non-growing patient: a case report
Published in Orthodontic Waves, 2021
Preeya Suwanwitid, Tanan Jaruprakorn, Chidsanu Changsiripun
In the mandibular arch, the anterior and posterior teeth were separately levelled and aligned. A lingual holding arch and 0.017- x 0.025-in stainless steel posterior segmented archwires were anchored to prevent unwanted side effects, especially posterior teeth extrusion. The anterior teeth segment was intruded and proclined with a 0.016- x 0.022-in stainless steel utility arch wire for 12 months (Figure 3(b)). Concurrently, the scissor-bite was corrected using intermaxillary elastics (3/16 inch, 3.5 ounces) for 3 months. After the curve of Spee was levelled, stainless steel arch wires with a 15°‒20° V-bend were placed on the mandibular teeth. When a normal overbite and overjet were achieved, second and third-order bends were performed to achieved maximum intercuspation. The intermaxillary elastics were used to improve the molar and canine relationships.
Quality of life several years after orthodontic-surgical treatment with bilateral sagittal split osteotomy
Published in Acta Odontologica Scandinavica, 2020
Jaakko Paunonen, Anna-Liisa Svedström-Oristo, Mika Helminen, Timo Peltomäki
To ensure optimal occlusal stability, all patients were examined by the clinical team (orthodontist and maxillofacial surgeon) approximately three months before the operation. In patients with short anterior face height and deep bite, the steep curve of Spee was not levelled presurgically, but the mandible was rotated backwards with mandibular BSSO advancement to reduce overbite and increase lower face height. Postoperatively, these patients had a lateral open bite with tooth contacts in the front teeth and second molars. According to the treatment plan, lateral open bites were postsurgically closed as part of orthodontic finalising. To obtain the planned occlusion, a splint was used in all cases during the operation. The splint was removed in all cases once ostheosynthesis had been attained. In all cases rigid fixation with bicortical screws or miniplates was used; no maxillomandibular fixation was needed. Orthodontic treatments were carried out by four senior orthodontists and the operations by three senior surgeons, with or without residents.
Molar protraction on an adult with severe high-angle Class III malocclusion and knife-edge residual ridges
Published in Orthodontic Waves, 2021
Adith Venugopal, Mona Sayegh Ghoussoub, Paolo Manzano, Prateek Mehta, Anand Marya, Nikhilesh R Vaid, Björn Ludwig, S. Jay Bowman
Clinical intraoral examination revealed a mild anterior and posterior crossbite, overjet of −2 mm with projected mandibular and maxillary incisors, Class III canines on the left and on the right. She was missing both lower first molars and the residual ridges were very narrow and receded. She had crowns on her upper front teeth (#11, #21, and #22). Lower curve of Spee was deep and measured at 4 mm. She exhibited a thin gingival biotype, especially on the lower anterior region. Also, mild recession with reference to #41 can be seen possibly due to the repeated trauma caused by the upper incisors due to the prevailing anterior crossbite (Figure 1).