What determines dental protrusion or crowding while both malocclusions are caused by large tooth size?
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Objective: To examine the differences in lateral cephalometric characteristics between patients with dental protrusion and crowding in order to determine what factors affect dental protrusion or crowding while both malocclusion types are caused by large tooth size. Methods: Twenty nine individuals with dental protrusion and 22 individuals with dental crowding were enrolled in this study. All subjects had larger teeth than average and Class I molar relationships. Craniofacial characteristics and hyoid bone positions were determined from lateral cephalograms and compared between the two groups. Results: In the comparisons of craniofacial characteristics, the measurements indicating maxillary length and facial convexity showed greater values in the protrusion group than in the crowding group. Comparisons of hyoid bone positions showed that the hyoid bone was positioned more anteriorly and superiorly in the protrusion group than in the crowding group. Conclusions: The results of the present study indicate that some craniofacial characteristics and tongue position may affect the development of dental protrusion or crowding; when an individual has large teeth, dental protrusion or crowding might be determined according to maxillary growth and tongue position.
Abstract
Objective: To examine the differences in lateral cephalometric characteristics between patients with dental protrusion and crowding in order to determine what factors affect dental protrusion or crowding while both malocclusion types are caused by large tooth size. Methods: Twenty nine individuals with dental protrusion and 22 individuals with dental crowding were enrolled in this study. All subjects had larger teeth than average and Class I molar relationships. Craniofacial characteristics and hyoid bone positions were determined from lateral cephalograms and compared between the two groups. Results: In the comparisons of craniofacial characteristics, the measurements indicating maxillary length and facial convexity showed greater values in the protrusion group than in the crowding group. Comparisons of hyoid bone positions showed that the hyoid bone was positioned more anteriorly and superiorly in the protrusion group than in the crowding group. Conclusions: The results of the present study indicate that some craniofacial characteristics and tongue position may affect the development of dental protrusion or crowding; when an individual has large teeth, dental protrusion or crowding might be determined according to maxillary growth and tongue position.
참고문헌 (25)
- Downs WB, "Analysis of the dentofacial profile", Angle Orthod, 26, pp.191~212 (1956)
- Graber TM, "Orthodontics: principles and practice", pp.437~447 (1972), WB Saunders
- Posen AL, "The influence of maximum perioral and tongue force on the incisor teeth", Angle Orthod, 42, pp.285~309 (1972)
- Cox NH, "Facial harmony", Am J Orthod, 60, pp.175~183 (1971)
- Keating PJ, "Bimaxillary protrusion in the Caucasian: a cephalometric study of the morphological features", Br J Orthod, 12, pp.193~201 (1985)
- McCann J, "An investigation of tooth size in Northern Irish people with bimaxillary dental protrusion", Eur J Orthod, 18, pp.617~621 (1996)
- Fastlicht J, "Crowding of mandibular incisors", Am J Orthod, 58, pp.156~163 (1970)
- Norderval K, "Mandibular anterior crowding in relation to tooth size and craniofacial morphology", Scand J Dent Res, 83, pp.267~273 (1975)
- Doris JM, "A biometric study of tooth size and dental crowding", Am J Orthod, 79, pp.326~336 (1981)
- 황현식, "치아 크기와 치열궁 폭경이 치아밀집에 미치는 영향", 대한치과교정학회지, 34(6), pp.488~496 (2004), 대한치과교정학회
- Fonseca RJ, "A cephalometric evaluation of American Negro women", Am J Orthod, 73, pp.152~160 (1978)
- Mitchell JI, "A comparison of maximum perioral muscle forces in North American blacks and whites", Angle Orthod, 48, pp.126~131 (1978)
- Posen AL, "The application of quantitative perioral assessment to orthodontic case analysis and treatment planning", Angle Orthod, 46, pp.118~143 (1976)
- Lamberton CM, "Bimaxillary protrusion as a pathologic problem in the Thai", Am J Orthod, 77, pp.320~329 (1980)
- Kim DS, "A study of Korean norm about tooth size and ratio in Korean adults with normal occlusion", Korean J Orthod, 31, pp.505~515 (2001)
- Garn SM, "Genetics of dental development, in The biology of occlusal development. Craniofacial Growth Series. Vol 7", pp.61~88 (1977), Center for Human Growth and Development, The University of Michigan
- Moyers RE, "Analysis of the dentition and occlusion, in Handbook of orthodontics", pp.221~246 (1988), Year Book Medical Publishers
- Rose JC, "Origins of dental crowding and malocclusions: an anthropological perspective", Compend Contin Educ Dent, 30, pp.292~300 (2009)
- Fromm B, "Postural behaviour of the hyoid bone in normal occlusion and before and after surgical correction of mandibular protrusion", Swed J Dent, 63, pp.425~433 (1970)
- Bibby RE, "The hyoid triangle", Am J Orthod, 80, pp.92~97 (1981)
- Gustavsson U, "Hyoid bone position in relation to head posture", Swed J Dent, 65, pp.423~430 (1972)
- King EW, "A roentgenographic study of pharyngeal growth", Angle Orthod, 22, pp.23~37 (1952)
- Graber LW, "Hyoid changes following orthopedic treatment of mandibular prognathism", Angle Orthod, 48, pp.33~38 (1978)
- Tallgren A, "Long-term changes in hyoid bone position and craniocervical posture in complete denture wearers", Acta Odontol Scand, 42, pp.257~267 (1984)
- Carlsoo S, "A radiographic study of the position of the hyo-laryngeal complex in relation to the skull and the cervical column in man", Trans R Sch Dent Stockh Umea, 5, pp.13~34 (1960)