대한치과교정학회지 (The korean journal of orthodontics)

  • 제45권3호
  • /
  • Pages.113-120
  • /
  • 2015
  • /
  • 2234-7518(pISSN)
  • /
  • 2005-372X(eISSN)
대한치과교정학회 (The Korean Association Of Orthodontists)
권호 표지
DOI QR코드

DOI QR Code

Comparison of occlusal contact areas of class I and class II molar relationships at finishing using three-dimensional digital models

  • Lee, Hyejoon (Department of Dentistry, Graduate School of Medicine, Ewha Womans University) ;
  • Kim, Minji (Department of Dentistry, Graduate School of Medicine, Ewha Womans University) ;
  • Chun, Youn-Sic (Department of Dentistry, Graduate School of Medicine, Ewha Womans University)
  • 투고 : 2014.04.21
  • 심사 : 2015.01.05
  • 발행 : 2015.05.25
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Objective: This study compared occlusal contact areas of ideally planned set-up and accomplished final models against the initial in class I and II molar relationships at finishing. Methods: Evaluations were performed for 41 post-orthodontic treatment cases, of which 22 were clinically diagnosed as class I and the remainder were diagnosed as full cusp class II. Class I cases had four first premolars extracted, while class II cases had maxillary first premolars extracted. Occlusal contact areas were measured using a three-dimensional scanner and RapidForm 2004. Independent t-tests were used to validate comparison values between class I and II finishings. Repeated measures analysis of variance was used to compare initial, set up, and final models. Results: Molars from cases in the class I finishing for the set-up model showed significantly greater contact areas than those from class II finishing (p < 0.05). The final model class I finishing showed significantly larger contact areas for the second molars (p < 0.05). The first molars of the class I finishing for the final model showed a tendency to have larger contact areas than those of class II finishing, although the difference was not statistically significant (p = 0.078). Conclusions: In set-up models, posterior occlusal contact was better in class I than in class II finishing. In final models, class I finishing tended to have larger occlusal contact areas than class II finishing.

키워드

참고문헌

  1. Liu D, Melsen B. Reappraisal of Class II molar relationships diagnosed from the lingual side. Clin Orthod Res 2001;4:97-104. https://doi.org/10.1034/j.1600-0544.2001.040206.x
  2. Wheeler RC. An atlas of tooth form. Philadelphia: WB Saunders; 1969.
  3. Casko JS, Vaden JL, Kokich VG, Damone J, James RD, Cangialosi TJ, et al. Objective grading system for dental casts and panoramic radiographs. American Board of Orthodontics. Am J Orthod Dentofacial Orthop 1998;114:589-99. https://doi.org/10.1016/S0889-5406(98)70179-9
  4. Fotis V, Melsen B, Williams S. Posttreatment changes of skeletal morphology following treatment aimed at restriction of maxillary growth. Am J Orthod 1985;88:288-96. https://doi.org/10.1016/0002-9416(85)90127-7
  5. Jang SY, Kim M, Chun YS. Differences in molar relationships and occlusal contact areas evaluated from the buccal and lingual aspects using 3- dimensional digital models. Korean J Orthod 2012; 42:182-9. https://doi.org/10.4041/kjod.2012.42.4.182
  6. Gibbs CH, Mahan PE, Lundeen HC, Brehnan K, Walsh EK, Holbrook WB. Occlusal forces during chewing and swallowing as measured by sound transmission. J Prosthet Dent 1981;46:443-9. https://doi.org/10.1016/0022-3913(81)90455-8
  7. Yoon HR, Choi YJ, Kim KH, Chung C. Comparisons of occlusal force according to occlusal relationship, skeletal pattern, age and gender in Koreans. Korean J Orthod 2010;40:304-13. https://doi.org/10.4041/kjod.2010.40.5.304
  8. Yurkstas A, Manly RS. Measurement of occlusal contact area effective in mastication. Am J Orthod 1949;35:185-95. https://doi.org/10.1016/0002-9416(49)90028-7
  9. Garrido Garcia VC, Garcia Cartagena A, Gonzalez Sequeros O. Evaluation of occlusal contacts in maximum intercuspation using the T-Scan system. J Oral Rehabil 1997;24:899-903. https://doi.org/10.1046/j.1365-2842.1997.00586.x
  10. Angle EH. Classification of malocclusion. Dental Cosmos 1899;41:248-64, 350-7.
  11. Hellman M. An interpretation of angle's Classification of malocclusion of the teeth supported by the evidence from comparative anatomy and evolution. Dental Cosmos 1920;62:476.
  12. Jang JM, Lee SB. A qualitative and quantitative study on occlusal conditions in health volunteers and athletes with normal occlusions. J Adv Prosthodont 1998;36:302-22.
  13. Ehrlich J, Taicher S. Intercuspal contacts of the natural dentition in centric occlusion. J Prosthet Dent 1981;45:419-21. https://doi.org/10.1016/0022-3913(81)90104-9
  14. Delong R, Ko CC, Anderson GC, Hodges JS, Douglas WH. Comparing maximum intercuspal contacts of virtual dental patients and mounted dental casts. J Prosthet Dent 2002;88:622-30. https://doi.org/10.1067/mpr.2002.129379
  15. Kim JH, Kim KB, Kim WC, Kim JH, Kim HY. Accuracy and precision of polyurethane dental arch models fabricated using a three-dimensional subtractive rapid prototyping method with an intraoral scanning technique Korean J Orthod 2014;44:69-76. https://doi.org/10.4041/kjod.2014.44.2.69

피인용 문헌

  1. Changes in occlusal function after extraction of premolars: 2-year follow-up vol.87, pp.5, 2015, https://doi.org/10.2319/112116-836.1
  2. Reliability and Validity of T‐scan and 3D Intraoral Scanning for Measuring the Occlusal Contact Area vol.29, pp.1, 2015, https://doi.org/10.1111/jopr.13096
  3. 3D analysis of occlusal surfaces of teeth and their contacts. Part I. Development of a method for assessing the area of the occlusal surface, the severity of its relief and the histogram of contacts vol.100, pp.4, 2021, https://doi.org/10.17116/stomat202110004137
  4. The Effects of Orthodontic Brackets on the Time and Accuracy of Digital Impression Taking vol.18, pp.10, 2015, https://doi.org/10.3390/ijerph18105282
  5. The rationale for orthodontic retention: piecing together the jigsaw vol.230, pp.11, 2015, https://doi.org/10.1038/s41415-021-3012-1