Utjecaj načina prijenosa šarnirske osi na trodimenzionalni pomak kondila između položaja centrične relacije i maksimalne interkuspidacije Influence of the Hinge Axis Transfer Modality on the Three- Dimensional Condylar Shift Between the Centric Relation and the Maximum Intercuspation Positions
نویسندگان
چکیده
Adresa za dopisivanje Robert Ćelić Sveučilište u Zagrebu Stomatološki fakultet Zavod za mobilnu protetiku Gundulićeva 5, 10 000 Zagreb Tel: 1 4802 111 [email protected] Sažetak Svrha: Željelo se odrediti utječe li način registracije i prijenosa šarnirske osi (prijenos obraznim lukom spram prosječnog montiranja) s ispitanika u artikulator na trodimenzionalni pomak kondila između položaja centrične relacije (CR) i maksimalne interkuspidacije (MI). Materijal i metode: U istraživanju su sudjelovala 32 potpuno ozubljena ispitanika (16 muškaraca i 16 žena). Inkluzijski kriteriji studije obuhvatili su asimptomatske ispitanike s normalnim okluzijskim odnosima (Angleova klasa I) u dobi od 20 do 33 godine (prosječna dob 22,6 ± 4,7 godina). Trodimenzionalni pomak kondila (anteroposteriorni, superoinferiorni i mediolateralni) između položaja centrične relacije (CR) i maksimalne interkuspidacije (MI) bio je analiziran upotrebom indikatora položaja mandibule (MPI, SAM Prazisionstechnik GmbH, München, Njemačka). Rezultati: Prosječni trodimenzionalni pomak kondila iznosio je 0,13 ± 0,12 milimetara za prijenos obraznim lukom i 0,22 ± 0,23 milimetra za prosječno montiranje. Nisu zabilježene statistički značajne razlike između spolova. Rezultati Mann-Whitneyjeva testa pokazali su statistički značajne razlike za anteroposteriorni i superoinferiorni pomak kondila (P < 0,001). Razlika u mediolateralnom pomaku nije bila statistički značajna. Zaključak: S obzirom na odstupanja unutar trodimenzionalnog pomaka kondila, prijenos obraznim lukom pokazao se točnijim u odnosu prema prosječnom montiranju u poluprilagodljivi artikulator. No prosječne vrijednosti trodimenzionalnog pomaka kondila nisu odstupale od normalnih vrijednosti, pa nemaju kliničko značenje. Prema tome, pouzdanima se mogu smatrati oba načina prijenosa (prijenos obraznim lukom i prosječno montiranje) kod asimptomatskih ispitanika s normalnom okluzijom. Ključne riječi artikulatori; centrična relacija; zglobna osovina; prijenos obraznim lukom 1 Dom zdravlja Zagreb zapad, Albaharijeva 5, 10000 Zagreb Health center Zagreb west, Albaharijeva 5, 10000 Zagreb 2 Zavod za stomatološku protetiku Medicinskog fakulteta Sveučilišta u Rijeci, Krešimirova 40, 51 000 Rijeka Department of Prosthodontics, Medical Faculty, University of Rijeka, Kresimirova 40, 51 000 Rijeka, Croatia 3 Zavod za mobilnu protetiku Stomatološkog fakulteta Sveučilišta u Zagrebu, Ivana Gundulića 5, 10 000 Zagreb Robert Ćelić, Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb, Croatia
منابع مشابه
Cone-beam tomography assessment of condylar position discrepancy between centric relation and maximal intercuspation.
The magnitude of occasional discrepancies between the centric relation and maximal intercuspation positions remains a controversial subject. This study quantitatively evaluated the possible discrepancies in the condyle/mandibular fossa relationship between these positions using cone-beam computed tomography. Twenty young and asymptomatic volunteers were distributed equally into normal occlusion...
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PURPOSE The aim of this study was to determine the reproducibility of clinical centric relation (CR) registration techniques (bimanual manipulation, chin point guidance and Roth's method) by means of condyle position analysis. MATERIAL AND METHODS Thirty two fully dentate asymptomatic subjects (16 female and 16 male) with normal occlusal relations (Angle class I) participated in the study (me...
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There has been much discussion regarding the ideal position of the condyle in the mandibular fossa. Although the centric relation position (CR) is used as a reference, some authors do not believe that it is physiologic. Thus, the aim of this study was to evaluate in a group of asymptomatic individuals the position of the condyle in the mandibular fossa at maximum intercuspation (MI), with a occ...
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The present study assessed condylar displacement between initial maximal habitual intercuspation (MHI) and centric relation (CR), recorded after using a deprogramming occlusal splint for an average period of 7.8 +/- 2.1 months prior to any orthodontic treatment. The sample consisted of 22 subjects, 11 male and 11 female, with an average age of 14.2 +/- 1.4 years, with Class II malocclusion and ...
متن کاملCondylar displacement between centric relation and maximum intercuspation in symptomatic and asymptomatic individuals.
OBJECTIVE To measure condylar displacement between centric relation (CR) and maximum intercuspation (MIC) in symptomatic and asymptomatic subjects. MATERIALS AND METHODS The sample comprised 70 non-deprogrammed individuals, divided equally into two groups, one symptomatic and the other asymptomatic, grouped according to the research diagnostic criteria for temporomandibular disorders (RDC/TMD...
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