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Titolo:
The functional shift of the mandible in unilateral posterior crossbite andthe adaptation of the temporomandibular joints: a pilot study
Autore:
Nerder, PH; Bakke, M; Solow, B;
Indirizzi:
Univ Copenhagen, Sch Dent, Dept Orthodont, DK-2200 Copenhagen N, Denmark Univ Copenhagen Copenhagen Denmark N dont, DK-2200 Copenhagen N, Denmark Univenmarkhagen, Sch Dent, Dept Oral Funct & Physiol, DK-2200 Copenhagen, D Univ Copenhagen Copenhagen Denmark DK-2200 hysiol, DK-2200 Copenhagen, D
Titolo Testata:
EUROPEAN JOURNAL OF ORTHODONTICS
fascicolo: 2, volume: 21, anno: 1999,
pagine: 155 - 166
SICI:
0141-5387(199904)21:2<155:TFSOTM>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHILDREN; DISORDERS; MALOCCLUSION; OCCLUSION; BITE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Solow, B UnivnCopenhagen, Sch Dent, Dept Orthodont, Norre Alle 20, DK-2200Copenhage Univ Copenhagen Norre Alle 20 Copenhagen Denmark N 200 Copenhage
Citazione:
P.H. Nerder et al., "The functional shift of the mandible in unilateral posterior crossbite andthe adaptation of the temporomandibular joints: a pilot study", EUR J ORTHO, 21(2), 1999, pp. 155-166

Abstract

Changes in the functional shift of the mandibular midline and the condyleswere studied during treatment of unilateral posterior crossbite in six children, aged 7-11 years. An expansion plate with covered occlusal surfaces was used as a reflex-releasing stabilizing sprint during an initial diagnostic phase (I) in order to determine the structural (i.e. non-guided) position of the mandible. The same plate was used for expansion and retention (phase II), followed by a post-retention phase (III) without the appliance. Before and after each phase, the functional shift was determined kinesiographically and on transcranial radiographs by concurrent recordings with and without the splint. Transverse mandibular position was also recorded on cephalometric radiographs. Prior to phase I, the mandibular midline deviated more than 2 mm and, in occlusion (ICP), the condyles showed normally centred positions in the sagittal plane. With the splint, the condyle on the crossbite side was displaced2.4 mm (P < 0.05) forwards compared with the ICP, while the position of the condyle on the non-crossbite side was unaltered. After phase III, the deviation of the midline had been eliminated. Sagittal condylar positions in the ICP still did not deviate from the normal, and the splint position was now obtained by symmetrical forward movement of both condyles (1.3 and 1.4 mm). These findings suggest that the TMJs adapted to displacements of the mandible by condylar growth or surface modelling of the fossa. The rest positionremained directly caudal to the ICP during treatment. Thus, the splint position, rather than the rest position should be used to determine the therapeutic position of the mandible.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 15:07:24