Dental and skeletal changes after intra-oral molar distalization using a “Distal Driver” appliance: a pilot study
Journal Title: Journal of Stomatology (Czasopismo Stomatologiczne) - Year 2016, Vol 69, Issue 6
Abstract
frequent consequence of early loss of deciduous molars indicating distalisation of the mesialised molar tooth. A number of methods using either extra-oral appliances or intra oral appliances of various types have been suggested. While extra-oral appliances exert a high but intermittent force many of the intraoral ones deliver a modest, though constant, force and demands no patient cooperation. Aim of study. To investigate the effect of an intra-oral fixed appliance (Distal Driver) based on a NiTi spring incorporating also a standardised anchorage unit on the position of the maxillary first molar as well as on the facial skeleton and the dentition in general. Material and methods. The experimental group comprised 6 child patients exhibiting a distal molar relationship (Unilateral or Bilateral) of at least ½ premolar unit. The mesialised molars were distalised by means of a “Distal Driver” exerting a force of 150 gm for a period of 3-4 weeks. Anchorage was created by a fixed modified palatal bar cemented on the premolars supporting an acrylic palatal button ad modum Nance. The clinical situation was recorded before and after molar distalisation by means of study casts, cephalograms, panoramic radiographs as well as intra-oral photographs. The distalisation of the molars as well as the effect on anchorage teeth was quantitated on digital models derived from the plaster casts. Evaluation of the observed distal and vertical changes in molar position was performed on the lateral cephalogram. Results. Cast analysis showed a clear distalising effect on the maxillary first molars ranging from 1.25 mm to 6.18 mm as well as mesial movement of the premolar anchorage teeth from 0.46 mm to 5.55mm. The cephalometric analysis revealed a first molar distalisation of 0.9 mm to 5.6 mm though again with a mesial movement of the first premolar varying from 0.5 mm to 3.7 mm. A clear distal tipping of the first and second molars simultaneously with a mesial tipping of the first premolars was also recorded. Conclusion. The Distal Driver constitutes an efficient method of maxillary molar distalisation though is often accompanied by a distal rotation of these teeth and a mesial tipping of the anchorage premolars. Careful monitoring of anchorage loss is necessary if good results are to be achieved.
Authors and Affiliations
Gabriela Urbaniak-Malinowska, Marta Gibas-Stanek, Stephen Williams, Wojciech Stós, Bartłomiej W. Loster
Keywords
Related Articles
- EP ID EP187831
- DOI -
- Views 87
- Downloads 0
Profilaktyka obrażeń urazowych i leczenie problemów stomatologicznych u pacjentów chorych na padaczkę
Pacjenci chorujący na padaczkę stanowią grupę wymagającą szczególnej opieki stomatologicznej. W piśmiennictwie podkreślana jest konieczność zapobiegania u nich obrażeniom urazowym w obrębie głowy i jamy ustn...
Evaluation of a questionnaire study among paediatricians and family physicians concerning oral health
Aim of the study: To evaluate attitudes and practices of paediatricians and family doctors concerning oral health promotion. Material and methods: A questionnaire study involved 120 paediatricians and family doctors. Th...
Relation between oral breathing and the frequency of malocclusions and respiratory efficiency in adolescence
The aim of this study was to evaluate the relation between the improper way of respiration and the incidence of malocclusion during childhood and in adolescence. Material and methods. The research was conducted on 110 ch...
Clinical and microbiological effects of full-mouth disinfection versus quadrant-wise scaling and root planing
Introduction: Contemporary data on the clinical and microbiological effectiveness of the full mouth disinfection protocol in patients with chronic periodontitis reveals contradictory results.Objectives: The aim of the pr...
Distribution of occlusal contacts in asymptomatic young adults
The proprioceptive receptors in teeth give position signals and have direct influence on the design of the functional pattern. Functional occlusal harmony means the occlusal relationship of opposing teeth in all function...