The use of palatal implants for orthodontic anchorage. Design and clinical application of the orthosystem.

Abstract

This paper presents the Orthosystem (Institute Straumann, Waldenburg/ Switzerland), a new endosseous orthodontic implant anchor system for palatal anchorage. The Orthosystem may replace compliance dependent extraoral anchoring aids for orthodontics and makes a bonding of well aligned mandibular dentition and it's use with class II elastics unnecessary. The fixture is designed for a one-stage application. It consists of an implant of pure titanium with a surface-treated, screw-shaped endosseous part of 3.3 mm diameter and lengths of 4 and 6 mm. Above the polished transmucosal neck follows as abutment where transpalatal arches made of rigid orthodontic wires (0.032 x 0.032 inch) are fixed by means of a clamp-cap. 6 patients with an angle class II malocclusion were implanted with the 6 mm fixture in the proximal midsagittal region of the palate during a pilot study. The treatment goal was extraction of the first maxillary premolars with subsequent retraction of the frontal dentition under maximal anchorage of the lateral teeth. For the implantation a simple surgical procedure of 10 min length was required while no further invasive action are needed until explantation. This way the strain on the patients was reduced to a minimum. They are now at varying stages of active treatment and the most advanced case is demonstrated here. The clinical and radiological findings after 12 months of treatment comprising 3 months of healing revealed no implant mobility or dislocation, favourable periimplant soft tissue conditions, and no marked mesial movement of the implant supported teeth. The frontal dentition was retracted by 8 mm with space closure occurring in a relatively short treatment period.

Palatal implants are a good alternative to headgear: A randomized trial

“…Mid-palatal implants as a source of anchorage were first described in the mid 90s 4 and further skull studies were carried out to look at the appropriateness of the mid palatal area for the placement of these fixtures 5 .…”

Influence of consumerism on clinical prescription

“…4 Perhaps the reason for these implants tolerating non-axial loads could be due to the forces used being less than masticatory forces? Sir, -Here is an example of two different dental opinions regarding the same patient.…”

Carga imediata sobre implantes osseointegráveis para ancoragem ortodôntica: estudo em minipigs

“…Dentre esses, é importante citar: os implantes osseointegráveis (HIGUCHI, 2005;ÖDMAN et al, 1988;ROBERTS et al, 1990;ROBERTS et al, 1984;TURLEY et al, 1988;VAN ROEKEL, 1989), os implantes palatinos (WEHRBEIN et al, 1996), as miniplacas (UMEMORI, 1999), os onplants (BLOCK; HOFFMAN, 1995), e os miniimplantes OHMAE et al, 2001;PARK et al, 2003).…”

“…O aumento da demanda por métodos de tratamento que requeiram mínima colaboração, particularmente pelos adultos, e a importância dada à estética levaram à expansão da tecnologia nesta área (ALDIKAÇTI et al, 2004;FAVERO et al, 2002;WEHRBEIN et al, 1996).…”

“…ROBERTS et al (1989) relataram que o tempo médio necessário para osseointegração antes da inserção de carga era de 12 semanas em cães, e períodos de reparação de 8 a 20 semanas foram relatados em estudos experimentais (SAITO et al, 2000;TURLEY et al, 1988) e 3 a 6 meses em estudos clínicos ROBERTS et al, 1990;SHELLHART et al, 1996;WEHRBEIN et al, 1996;.…”