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研究生:劉明榮
研究生(外文):Ming-Jung Liu
論文名稱:使用光彈分析法觀察應用不同矯正方式解決下顎前牙擁擠時的骨骼內應力分佈
論文名稱(外文):Using photoelastic analysis to observe the stress distributions in bone tissue when applying various orthodontic methods to subside lower anterior crowding.
指導教授:李勝揚李勝揚引用關係
指導教授(外文):Sheng-Yang Lee
學位類別:碩士
校院名稱:臺北醫學大學
系所名稱:牙醫學系碩博士班
學門:醫藥衛生學門
學類:牙醫學類
論文種類:學術論文
論文出版年:2008
畢業學年度:96
語文別:中文
論文頁數:67
中文關鍵詞:牙齒擁擠光彈分析
外文關鍵詞:crowdingphotoelastic
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牙齒擁擠常常是令人困擾的問題,主要是因為不美觀,而且清潔不易,進而容易併發牙周病或齟齒的問題,也因此成為病人尋求矯正治療的主要訴求。傳統上若要將擁擠的牙齒排列整齊,首先要面臨到的就是空間不足的問題。若是對於不拔牙的病例必須先利用擴張牙弓的方式將空間挪出;而對於拔牙的病例,則會將鄰近牙後移來獲得空間後,進而將擁擠牙齒排列整齊。這兩種方式都強調獲得足夠空間的重要性,且不建議在空間挪出前,即將擁擠牙齒黏上矯正器與綁入超彈性金屬線來獲得牙齒的自然排列整齊。
此外,近年來隨著矯正裝置與材料工程的發展與進步,伴隨著不同矯正線綁法的改變與矯正器和超彈性鎳鈦合金線的改良發展,進而於近幾年來有所謂”自鎖性矯正器”的出現,它除了強調不需像傳統矯正方式必須在每顆牙齒上綁入結紮線”ligature wire”以外,也強調在搭配超彈性矯正線的情況下,能有效降低牙齒移動時產生的磨擦力與提供很輕的矯正力量,來快速而有效的完成初期的牙齒平齊化效用,但對於臨床上各種不同的治療結果,其在骨骼中所造成的應力分佈仍未有深入的探討。
本實驗主要藉由具有光彈性質的環氧樹脂來模擬齒槽骨,並利用樹脂牙齒排列來模擬下顎前牙擁擠的情形,接著使用較細的超彈性矯正線(0.014inch),並搭配不同的矯正器與不同的綁法來觀察牙齒受力的情形。結果發現,牙根間應力在自鎖性矯正器組中明顯降低許多;再者,若更改不同的矯正綁法,如合併橡皮分離物(separator)的使用,能明顯提供與一般傳統綁法較多的側方應力分佈。
另外,本實驗也試圖了解鄰接牙存在有無、不同型態與材質的矯正線對於牙齒根尖應力分佈的作用上,會有如何的影響。結果發現,矯正線的粗細對於應力的產生遠較矯正線的型態(圓線或方線)、材質來得重要;在分析牙根間的應力分佈上,應了解到過度的應力分佈也意味著更多的牙根吸收的可能。這些都是我們在臨床上面對牙齒不同擁擠程度與搭配何種矯正方式所應注意到的。而本實驗之結果將可提供有用的數據協助臨床醫師解決下顎前牙擁擠之相關問題。
Dental crowding is a perplexing problem, mainly due to its unestheticity. Also its difficulty in maintaining oral hygiene may cause problems like periodontal disease and caries as well. Therefore, it is quite often the chief complaint of patient in daily orthodontic practice.
Traditionally, if we try to align crowded teeth, we will face the problem of space deficiency. We can partially retract the neighboring tooth to create space in extraction cases, or expand dental arch to gain space. And then, we move the desired tooth into desired position.
Recently, with developing of the orthodontic appliance like “self-ligation bracket” and material engineering, and in combination of developing superelastic NiTi, it emphasizes in achieving initial phase of aligning teeth efficiently in light force. However, manufacturers only provide data of clinical result, lacking in discussion of stress distribution.
Besides, photoelasticity has been used in analyzing force distribution for a long time. The main mechanism is that one polarized light will separate into two light beams with different velocity when passing through solid materials with capability of transparence and isotropy. It also produces different colored flanges that can be observed as the guide of stress distribution.
Several models were set with mal-aligned teeth and silicone index in the epoxy resin to simulate situation of lower anterior crowding. Ligaiton methods were altered, including conventional- approaching, conventional-approaching with separator, and lingual-approaching methods, to evaluate whether ligation method with same orthodontic wire will cause different patterns of stress distribution. Also, different bracket system, including conventional bracket and self-ligation bracket, were investigated for the effect acting on stress distribution. Wire materials, whether size or patterns of geometry, were not altered. In result, we found that there is less stress distribution concentrated along the root surface in combination with self-ligation bracket. Meanwhile, in investigation on the effect of different ligation methods, both lingual-approaching and conventional-approaching with separator methods show more lateral stress distribution than conventional approaching method do.
Therefore, we think that it is quite essential to provide available space before using superelastic wire in dealing with crowded teeth, and both lingual-apporaching and conventional- approaching with separator. Using self-ligation bracket also demonstrated result less force concentrated on the apical portion of the root, which may result from less friction was generated. We think this study can provide another method of thinking in dealing with lower anterior crowding.
中文摘要…………………………………………………4
英文摘要…………………………………………………6
第一章、 緒論
第一節 研究動機與重要性……………………………9
第二節 研究目的………………………………………11
第三節 研究假設………………………………………12
第四節 名詞界定………………………………………12
第二章、 文獻回顧與查證
第一節 牙齒擁擠的原因與盛行率的討論……………16
第二節 解決牙齒擁擠於醫學與牙科上的重要性……17
第三節 改善牙齒擁擠的處理方式……………………18
第四節 影響初步利用矯正排列牙齒整齊的因素……19
第五節 鎳鈦合金金屬在牙科的應用…………………20
第六節 光彈於牙醫學上的應用………………………22
第七節 矯正上的力學分析……………………………23
第三章、 材料與方法
第一節 光彈材料的製備………………………………25
第二節 矯正器與矯正線的綁入………………………26
第三節 利用偏光鏡進行光彈分析……………………26
第四節 分析之參數……………………………………27
第四章、研究結果………………………………………29
第五章、研究討論
第一節 光彈分析法的選擇與使用…………………33
第二節 綁入的方式不同對根尖應力分佈所造成的影響
…………………………………………………………33
第三節 不同矯正系統的使用對於根尖應力分佈所造成的影響…………………………………………………36
第四節 鄰接牙的有無對於根尖應力分佈所造成的影
響………………………………………………………38
第五節 不同粗細大小與截面型態的矯正線對於根尖應
力分佈所造成的影響…………………………………39
第六節 不同材料性質的矯正線對於根尖應力分佈所
造成的影響……………………………………………41
第七節 矯正中牙齒移動所最適合的作用力………42
第六章、結論與未來展望………………………………44
第七章、參考文獻………………………………………46

中文摘要…………………………………………………4
英文摘要…………………………………………………6
第一章、 緒論
第一節 研究動機與重要性……………………………9
第二節 研究目的………………………………………11
第三節 研究假設………………………………………12
第四節 名詞界定………………………………………12
第二章、 文獻回顧與查證
第一節 牙齒擁擠的原因與盛行率的討論……………16
第二節 解決牙齒擁擠於醫學與牙科上的重要性……17
第三節 改善牙齒擁擠的處理方式……………………18
第四節 影響初步利用矯正排列牙齒整齊的因素……19
第五節 鎳鈦合金金屬在牙科的應用…………………20
第六節 光彈於牙醫學上的應用………………………22
第七節 矯正上的力學分析……………………………23
第三章、 材料與方法
第一節 光彈材料的製備………………………………25
第二節 矯正器與矯正線的綁入………………………26
第三節 利用偏光鏡進行光彈分析……………………26
第四節 分析之參數……………………………………27
第四章、研究結果………………………………………29
第五章、研究討論
第一節 光彈分析法的選擇與使用…………………33
第二節 綁入的方式不同對根尖應力分佈所造成的影響
…………………………………………………………33
第三節 不同矯正系統的使用對於根尖應力分佈所造成的影響…………………………………………………36
第四節 鄰接牙的有無對於根尖應力分佈所造成的影
響………………………………………………………38
第五節 不同粗細大小與截面型態的矯正線對於根尖應
力分佈所造成的影響…………………………………39
第六節 不同材料性質的矯正線對於根尖應力分佈所
造成的影響……………………………………………41
第七節 矯正中牙齒移動所最適合的作用力………42
第六章、結論與未來展望………………………………44
第七章、參考文獻………………………………………46
Abboud M, Gruner M, Koeck B. Anterior crowding–just an esthetic problem? J Orofac Orthop 2002;63:264-273
Adams DM, Powers JM, Asgar K. Effect of brackets and ties on stiffness of an arch wire. Am J Orthod Dentofac Orthop 1987; 91:131-136
Baek SH. 2007. New trend in orthodontics, Shinhung Interational., Inc., Korea. p51
Burstone CJ, Qin B, Morton JY. Chinese NiTi wire: A new orthodontic alloy. Am J Orthod 1985;87:445-452
Burstone CJ. The biomechanics of tooth movement. In: Kraus
BS, Riedel RA, editors. Vistas in orthodontics.
Philadelphia:Lea & Febiger; 1962.
Caputo AA, Standlee JP. 1987. Biomechanics in clinical dentistry, Quintessence Publishing Co., Inc., Chicago, Illinosis. p20-24
Chaconas SJ, Caupto AA, Miyashita K. Force distribution comparisons of various retraction archwires. Angle Orthod 1989;59:25-30
Cengiz SB, Atac AS, Cehreli ZC. Biomechanical effects of splint types on traumatized tooth: a photoelastic stress analysis. Dent Traumatol 2006;22:133-138
Daily J, Riley W. 1991. Experimental stress analysis. McGraw Hill Inc., New York, P560
Diedrich P. Periodontal relevance of anterior crowding.J Orofac Orthop 2000:61:69-79
Evensena JP, Øgaardb B. Are malocclusions more prevalent and severe now? A comparative study of medieval skulls from Norway. Am J Orthod Dentofacial Orthop 2007;131:710-716
Glickman I, Roeber FW, Brion M, Pameijer JHN. Photoelastic
analysis of internal stresses in the periodontium created by occlusal forces. J Periodontol 1970;41:30-35
Graber TM, Vanarsdall RL, Vig KWL. Orthodontics: current principles & techniques. 2005, Mosby Inc., USA. p759
Guard WF, Haack DC, Ireland RL. Photoelastic stress analysis of buccolingual sections of class II cavity restorations. J Am Dent Assoc 1958;57:631-635
Hain, Dhopatkar, Rock. A comparison of different ligation methods on friction. Am J Orthod Dentofacial Orthop 2006;130:666-670
Hayashi RK, Chaconas SJ, Caputo AA. Effects of force direction on supporting bone during tooth movement. J Am Dent Assoc 1975;90:1012-1017
Henao SP, Kusy RP. Evaluation of the frictional resistance of conventional and self-ligating bracket designs using standardized archwires and dental typodonts. Angle Orthod 2004(a);74:202-211
Henao SP, Kusy RP. Frictional evaluations of dental typodont models using four self-ligating designs and a conventional design. Angle Orthod, 2004(b);75:75–85
Hisano M, Chung CJ, Soma K. Nonsurgical correction of skeletal Class III malocclusion with lateral shift in an adult. Am J Orthod Dentofacial Orthop 2007;131:797-804
Ihlow D, Kubein-Meesenburg D, Fanghanel J, Lohrmann B, Elsner V, Nagerl H. Biomechanics of the dental arch and incisal crowding. J Orofac Orthop 2004;65:5-12
Kinomoto Y, Torii M. Photoelastic analysis of polymerization contraction stresses in resin composite restorations. J. Dent 1998;26:165-171
Kinomoto Y, Torii M, Takeshige F, Ebisu S. Comparison of polymerization contraction stresses between self- and light-curing composites. J. Dent 1999;27:383-389
Krishnan V, and Davidovitch Z. Cellular, molecular, and tissue-level reactions to orthodontic force. Am J Orthod Dentofacial Orthop 2006;129:469e.1-460e.32
Kusakabe T, Caputo AA, Shetty V, Iida J. Biomechanical rationale for surgically facilitated expansion of the maxilla in the cleft palate patient. World J Orthod 2007;8:167-173
Little RM. The irregularity index: a quantitative score of mandibular anterior alignment. Am. J. Orthod 1975;68: 554-563
Miura F, Mogi M, Yoshiaki O. New application of superelastic NiTi rectangular wire. J Clin Orthod 1990;24:544-548
Nakamura A, Teratani T, Itoh H, Sugawara J. Photoelastic stress analysis of mandibular molars moved distally with the skeletal anchorage system. Am J Orthod Dentofacial Orthop 2007;132:624-629
Nikolaos P, Argy P, Theodore E. Self-ligating vs conventional brackets in the treatment of mandibular crowding: A prospective clinical trial of treatment duration and dental effects. Am J Orthod Dentofacial Orthop 2007;132:208-215
Öz¸celik TB, Ersoy AE. An Investigation of tooth/ implant-supported fixed prosthesis designs with two different stress analysis methods: an in vitro study.
J Prosthodont 2007;16:107-116
Proffit WR, Fields HW. David MS. 2007a. Later stage of development. Contemporary orthodontics, Mosby Inc., USA. p122-127
Proffit WR, Fields HW. David MS. 2007b. The first stage of comprehensive treatment: alignment and leveling. Contemporary orthodontics, Mosby Inc., USA. p556
Proffit WR. Fields HW. David MS.2007c, The biologic basis of orthodontic therapy. Contemporary orthodontics, Mosby Inc., USA. p333
Sayin M, Türkkahranman H. Factors contributing to mandibular anterior crowding in the early mixed dentition. Angle Orthod 2004;74:754–758
Shigenobua N, Hisano M, Shima S,Matsubara N, Soma K. Patterns of dental crowding in the lower arch and contributing factors. Angle Orthod 2007;77:303-310
Staufer K, Landmesser H. Effects of crowding in the lower anterior segment–a risk evaluation depending upon the degree of crowding. J Orofac Orthop 2004;65:13-25
Türkkahraman H, Sayrin M. Relationship between mandibular anterior crowding and lateral dentofacial morphology in the early mixed dentition. Angle Orthod 2004:74:759-764
Yoon YJ, Jang SH, Hwang GW, Kim KW. Stress distribution produced by correction of the maxillary second molar in buccal crossbite. Angle Orthod 2002a;72:397-401
Yoon YJ, Jeong WJ, Jang SH, Hwang GW, Kim KW. Stress distribution produced by the correction of the mandibular second molar in lingual crossbite. Angle Orthod 2002b Dec;72:593-598
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