Abstract
Nowadays the importance given to facial aesthetic is increasing. The coincidence of facial, maxiller and mandibuler dental midlines is very important requiring facial aesthetic. Midline asymmetries can be seen in form of dental, skeletal and/or soft tissue asymmetries. In most of cases midline asymmetries accompany with facial asymmetries. Even if the amount of patients with midline asymmetry is not known to be aware of their problems, dental midline deviations observing without facial deformity can be noticed by most of patients with the help of their orthodontists. Symmetry of the dental and facial midlines comes at the beginning of the factors affecting treatment planning. For this reason midlines and due to the multifactorial etiology of asymmetries all of the factors that cause asymmetry must be evaluated properly during treatment planning.
In this present article, our aim is try to give answers following questions: “Which factors cause midline asymmetries?’’, “Which type of asymmetries can be seen commonly in clinical?’’, “Do the using mechanics affect occlusion?’’,“Is it necessary to correct each type of midline asymmetries?’’, “Is there any mean threshold for esthetically acceptable midline asymmetries?
Keywords: Midline, asymmetry.
ÖZET
Günümüzde yüz estetiğine verilen önem giderek artmaktadır. Fasiyal, maksiller ve mandibular dental orta hatların uyumu yüz estetiğinin sağlanması açısından oldukça önemlidir. Orta hat asimetrileri dental, iskeletsel ve/veya yumuşak dokuyu ilgilendiren şekilde görülebilir. Birçok olguda fasiyal asimetri şeklinde karşımıza çıkar. Asimetrili hastaların probleminin farkında olup olmadığı bilinmese de, fasiyal deformitenin gözlenmediği dental orta hat sapmaları çoğu hasta tarafından ancak ortodontistin yönlendirmesiyle fark edilebilir. Dental ve fasiyal orta hatların uyumu tedavi planlanmasını etkileyen faktörlerin başında gelir. Bu nedenle tedavi planlaması esnasında orta hatlar mutlaka değerlendirilmeli, multifaktöriyel etyolojisi nedeniyle asimetriye neden olan etkenler doğru bir şekilde belirlenmelidir. Bu derlemede amacımız; “ Orta hat asimetrilerine neden olan faktörler nelerdir?”, “Klinikte hangi tip orta hat asimetrileri ile karşılaşabiliriz?”, “Kullanılan mekanikler okluzyonu etkiler mi ?”, “Her orta hat asimetrisi tedavi gerektirir mi?” , “Orta hat asimetrilerinin estetik açıdan kabul edilebilir sınır bir değeri var mı?” gibi sorulara yanıt bulmaktır.
References
- Rebellato J. Asymmetric extractions used in the treatment of patients with asymmetries. Semin Orthod 1998;4:180-188.
- Jerrold L, Lowenstein L. The midline: diagnosis and treatment. Am J Orthod Dentofacial Orthop 1990;97(6):453-462.
- Gianelly AA, Paul IA. A procedure for midline correction. Am J Orthod 1970;58(3):264-267.
- Nanda R, Margolis MJ. Treatment strategies for midline discrepancies. Semin Orthod 1996;2:84–89.
- Bishara SE, Burkey PS, Kharouf JG. Dental and facial asymmetries: A review. Angle Orthod 1994;64(2):89-98.
- Kronmiller JE, Development of asymmetries. Semin Orthod 1998;4(3):134-137
- Persson M, Mandibular asymmetry of hereditary origin. Am J Orthod 1973;61:1-11.
- Lewis D. The deviated midline. Am J Orthod 1976;70:601-616.
- Pinto AS, Bushang PH, ThroCkmorton GS, Chen P.Morphological and positional asymmetry of young children with functional unilateral posterior crossbite, Am J Orthod Dentofacial Orthop 2001;120:513-520.
- Ülgen M,Ortodontik Tedavi Prensipleri Ed. Ülgen M. 5.Baskı Ank. Ü. Basımevi Ankara, 1999, 501-50
- Sarver DM, Johnston MW. Orthognathic surgery and aesthetics: Planning treatment to achieve functional and aesthetic goals. Br J Orthod 1993;20:93-100.
- Burstone CJ, Diagnosis and treatment planing of patients with asymmetries. Semin Orthod. 1998;4;(3):153-164.
- Kutin G,Hawes RR. Posterior crossbites in the deciduous and mixed dentition. Am J Orthod 1969;56:491-504.
- Arnett GW, Bergman RT. Facial keys to orthodontic diagnosis and treatment planning—part II. Am J Orthod 1993;103:395-411.
- Miller EL, Bodden WR Jr, Jamison HC. A study of the relationship of the dental midline to the facial median line. J Prosthet Dent 1979;41:657-60.
- Strang R, Thompson W. A textbook of orthodontia. Philadelphia.Lea & Febiger, 1958.
- Proffit W, Fields HW. Contemporary Orthodontics , 4 nd ed Mosby Year Book, St Louis, 2007, p.608-609. Alexander RG. The Alexander discipline. Glendora, Califomia: Ormco, 1987. Begg PR, Kesling P. Begg orthodontic theory and technique, 3rd ed. Philadelphia: WB Saunders, 197
- Gianelly AA, Bednar J, Dietz VS. Japanese NiTi coils used to move molars distally. Am J Orthod Dentofacial Orthop 1991;99:54656
- Shroff B,Siegel SM. Treatment of patients with asymmetries using asymmetric mechanics. Semin Orthod 1998;4:165-179. Steenbergen EV, Nanda R.Biomechanics of orthodontic correction of dental asymmetries. Am J Orthod Dentofacial Orthop 1995;107:618-624. Akın M, Orta hat sapma tedavilerinde asimetrik jasper-jumper apareyi uygulamasının diş, çene ve yüz sistemi üzerine etkileri. Gülhane Askeri Tıp Akademisi Doktora Tezi, Ankara, 2000.
- Farronato G, Maspero C, Farronato D, Giannini L. Modified hyrax expander for correction of upper midline deviation. J.Clin Orthod. 2009;43:158-60.
- Alcan T, Ceylanoğlu C. Upper midline correction in conjunction with rapid maxillary expansion. Am J Orthod Dentofacial Orthop 2006;130(5):671-675.
- Johnston CD, Burden DJ, Stevenson MR. The influence of dental to facial 10 Cardash HS, Ormanier Z,Laufer BZ. Observable deviation of the facial and anterior tooth midlines . J Prosthet Dent 2003;89:282-285.
- Zhang YF, Xiao L, Zhao Z, Li J, Peng Y.Young people’s esthetic perception of dental midline deviation. Angle Orthod 2010;80(3):515.
Abstract
Günümüzde yüz estetiğine verilen önem giderekartmaktadır. Fasiyal, maksiller ve mandibulardental orta hatların uyumu yüz estetiğininsağlanması açısından oldukça önemlidir. Orta hatasimetrileri dental, iskeletsel ve/veya yumuşakdokuyu ilgilendiren şekilde görülebilir. Birçokolguda fasiyal asimetri şeklinde karşımıza çıkar.Asimetrili hastaların probleminin farkında olupolmadığı bilinmese de, fasiyal deformiteningözlenmediği dental orta hat sapmaları çoğu hastatarafından ancak ortodontistin yönlendirmesiylefark edilebilir. Dental ve fasiyal orta hatların uyumutedavi planlanmasını etkileyen faktörlerin başındagelir. Bu nedenle tedavi planlaması esnasında ortahatlar mutlaka değerlendirilmeli, multifaktöriyeletyolojisi nedeniyle asimetriye neden olan etkenlerdoğru bir şekilde belirlenmelidir. Bu derlemedeamacımız; “ Orta hat asimetrilerine neden olanfaktörler nelerdir?”, “Klinikte hangi tip orta hatasimetrileri ile karşılaşabiliriz?”, “Kullanılanmekanikler okluzyonu etkiler mi ?”, “Her orta hatasimetrisi tedavi gerektirir mi?” , “Orta hatasimetrilerinin estetik açıdan kabul edilebilir sınırbir değeri var mı?” gibi sorulara yanıt bulmaktır.
References
- Rebellato J. Asymmetric extractions used in the treatment of patients with asymmetries. Semin Orthod 1998;4:180-188.
- Jerrold L, Lowenstein L. The midline: diagnosis and treatment. Am J Orthod Dentofacial Orthop 1990;97(6):453-462.
- Gianelly AA, Paul IA. A procedure for midline correction. Am J Orthod 1970;58(3):264-267.
- Nanda R, Margolis MJ. Treatment strategies for midline discrepancies. Semin Orthod 1996;2:84–89.
- Bishara SE, Burkey PS, Kharouf JG. Dental and facial asymmetries: A review. Angle Orthod 1994;64(2):89-98.
- Kronmiller JE, Development of asymmetries. Semin Orthod 1998;4(3):134-137
- Persson M, Mandibular asymmetry of hereditary origin. Am J Orthod 1973;61:1-11.
- Lewis D. The deviated midline. Am J Orthod 1976;70:601-616.
- Pinto AS, Bushang PH, ThroCkmorton GS, Chen P.Morphological and positional asymmetry of young children with functional unilateral posterior crossbite, Am J Orthod Dentofacial Orthop 2001;120:513-520.
- Ülgen M,Ortodontik Tedavi Prensipleri Ed. Ülgen M. 5.Baskı Ank. Ü. Basımevi Ankara, 1999, 501-50
- Sarver DM, Johnston MW. Orthognathic surgery and aesthetics: Planning treatment to achieve functional and aesthetic goals. Br J Orthod 1993;20:93-100.
- Burstone CJ, Diagnosis and treatment planing of patients with asymmetries. Semin Orthod. 1998;4;(3):153-164.
- Kutin G,Hawes RR. Posterior crossbites in the deciduous and mixed dentition. Am J Orthod 1969;56:491-504.
- Arnett GW, Bergman RT. Facial keys to orthodontic diagnosis and treatment planning—part II. Am J Orthod 1993;103:395-411.
- Miller EL, Bodden WR Jr, Jamison HC. A study of the relationship of the dental midline to the facial median line. J Prosthet Dent 1979;41:657-60.
- Strang R, Thompson W. A textbook of orthodontia. Philadelphia.Lea & Febiger, 1958.
- Proffit W, Fields HW. Contemporary Orthodontics , 4 nd ed Mosby Year Book, St Louis, 2007, p.608-609. Alexander RG. The Alexander discipline. Glendora, Califomia: Ormco, 1987. Begg PR, Kesling P. Begg orthodontic theory and technique, 3rd ed. Philadelphia: WB Saunders, 197
- Gianelly AA, Bednar J, Dietz VS. Japanese NiTi coils used to move molars distally. Am J Orthod Dentofacial Orthop 1991;99:54656
- Shroff B,Siegel SM. Treatment of patients with asymmetries using asymmetric mechanics. Semin Orthod 1998;4:165-179. Steenbergen EV, Nanda R.Biomechanics of orthodontic correction of dental asymmetries. Am J Orthod Dentofacial Orthop 1995;107:618-624. Akın M, Orta hat sapma tedavilerinde asimetrik jasper-jumper apareyi uygulamasının diş, çene ve yüz sistemi üzerine etkileri. Gülhane Askeri Tıp Akademisi Doktora Tezi, Ankara, 2000.
- Farronato G, Maspero C, Farronato D, Giannini L. Modified hyrax expander for correction of upper midline deviation. J.Clin Orthod. 2009;43:158-60.
- Alcan T, Ceylanoğlu C. Upper midline correction in conjunction with rapid maxillary expansion. Am J Orthod Dentofacial Orthop 2006;130(5):671-675.
- Johnston CD, Burden DJ, Stevenson MR. The influence of dental to facial 10 Cardash HS, Ormanier Z,Laufer BZ. Observable deviation of the facial and anterior tooth midlines . J Prosthet Dent 2003;89:282-285.
- Zhang YF, Xiao L, Zhao Z, Li J, Peng Y.Young people’s esthetic perception of dental midline deviation. Angle Orthod 2010;80(3):515.
Details
| Primary Language | Turkish |
|---|---|
| Journal Section | Review |
| Authors | |
| Publication Date | July 26, 2013 |
| Submission Date | August 6, 2011 |
| Published in Issue | Year 2013 |
Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.
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