Kornkamol Anasart
ABSTRACT
Malocclusion Class II is a poor-bite condition when the lower first molar situates more posteriorly than the upper first molar. To restore the normality of bite condition, the upper molar is often moved distally using an orthodontic device. The objective of this study was to predict and compare the outcomes of two different orthodontic devices both equipped with miniscrews. The first device, called a buccal mini-implant, has miniscrews placed on the alveolar bone on the buccal surface. The second device, called an indirect palatal miniscrew anchorage and distalization appliance or iPANDA, has miniscrews inserted along the midline of the palatal bone. For comparison purpose, a three-dimensional (3D) model of both devices was virtually attached to a 3D model of the upper teeth with maxillary bone and periodontal ligament. A force of 200g was applied through the devices to simulate a recommended distalization force. Teeth displacement, stress in both miniscrews and surrounding bone, and micromotion at miniscrew-bone interface were measured using finite element method. The findings show that the iPANDA device led to a higher molar distalization and higher micronmotion compared to the buccal mini-implant device. Stress obtained from the iPANDA device was also found to be higher, however, it was relatively too small to damage both the miniscrew and surrounding bone.
- Angle, Edward H. Classification of malocclusion (1899).Google Scholar
- Bolla, Eugenio, Muratore, Filippo, Carano, Aldo, and Bowman, S. Jay. Evaluation of maxillary molar distalization with the distal jet: a comparison with other contemporary methods. The Angle Orthodontist, 72 (2002), 481--494.Google Scholar
- Bondemark, Lars and Karlsson, Ingela. Extraoral vs intraoral appliance for distal movement of maxillary first molars: a randomized controlled trial. The Angle orthodontist, 75 (2005), 699--706.Google Scholar
- Bussick, Timothy J. and McNamara, James A. Dentoalveolar and skeletal changes associated with the pendulum appliance. American Journal of Orthodontics and Dentofacial Orthopedics, 117 (2000), 333--343.Google ScholarCross Ref
- Chun, K. J., Choi, H. H., and Lee, J. Y. Comparison of mechanical property and role between enamel and dentin in the human teeth. Journal of dental biomechanics, 5 (2014).Google Scholar
- Coolidge, Edgar D. The thickness of the human periodontal membrane. The Journal of the American Dental Association and The Dental Cosmos, 24 (1937), 1260--1270.Google ScholarCross Ref
- Cornelis, Marie A. and Clerck, De and Hugo, J. Maxillary molar distalization with miniplates assessed on digital models: a prospective clinical trial. American journal of orthodontics and dentofacial orthopedics, 132 (2007), 373--377.Google Scholar
- Fuziy, Acácio, de Almeida and Rodrigues, Renato, Janson, Guilherme, Angelieri, Fernanda, and Pinzan, Arnaldo. Sagittal, vertical, and transverse changes consequent to maxillary molar distalization with the pendulum appliance. American journal of orthodontics and dentofacial orthopedics, 130 (2006), 502--510.Google Scholar
- Gelgör, İbrahim Erhan, Büyükyılmaz, Tamer, Karaman, Ali Ihyayhya, Dolanmaz, Doğan, and Kalaycı, Abdullah. Intraosseous screw supported upper molar distalization. The Angle orthodontist, 74 (2004), 838--850.Google Scholar
- Giesen, E. B. W., Ding, Ming, Dalstra, M., and Van Eijden, T. M. G. J. Mechanical properties of cancellous bone in the human mandibular condyle are anisotropic. Journal of biomechanics, 34 (2001), 799--803.Google Scholar
- Haydar, Seda and Üner, Oktay. Comparison of Jones jig molar distalization appliance with extraoral traction. American Journal of Orthodontics and Dentofacial Orthopedics, 117 (2000), 49--53.Google ScholarCross Ref
- Hilgers, James J. The pendulum appliance for Class II non-compliance therapy. J Clin orthod, 26 (1992), 706--714.Google Scholar
- Joseph, Abu A. and Butchart, Chris J. An evaluation of the pendulum distalizingappliance. In Seminars in Orthodontics (2000), 129--135.Google ScholarCross Ref
- Kang, Sungmin, Lee, Shin-Jae, Ahn, Sug-Joon, Heo, Min-Suk, and Kim, Tae-Woo. Bone thickness of the palate for orthodontic mini-implant anchorage in adults. American Journal of Orthodontics and Dentofacial Orthopedics, 131 (2007), S74--S81.Google ScholarCross Ref
- Karlsson, Ingela and Bondemark, Lars. Intraoral maxillary molar distalization: movement before and after eruption of second molars. The Angle Orthodontist, 76 (2006), 923--929.Google ScholarCross Ref
- Keles, Ahmet. Maxillary unilateral molar distalization with sliding mechanics: a preliminary investigation. The European Journal of Orthodontics, 23 (2001), 507--515.Google ScholarCross Ref
- Kinzinger, Gero S. M., Gülden, Norbert, Yildizhan, Faruk, and Diedrich, Peter R. Efficiency of a skeletonized distal jet appliance supported by miniscrew anchorage for noncompliance maxillary molar distalization. American Journal of Orthodontics and Dentofacial Orthopedics, 136 (2009), 578--586.Google ScholarCross Ref
- Lee, Jong-Suk, Hyung Kim, Doo, Park, Young-Chel, Kyung, Seung-Hyun, and Kim, Tae-Kyung. The efficient use of midpalatal miniscrew implants. The Angle orthodontist, 74 (2004), 711--714.Google Scholar
- Minch, Liwia. Material properties of periodontal ligaments. Advances in Hygiene and Experimental Medicine, 67 (2013), 1261--1264.Google Scholar
- Papadopoulos, Moschos A., Melkos, Aristides B., and Athanasiou, Athanasios E. Noncompliance maxillary molar distalization with the first-class appliance: a randomized controlled trial. American Journal of Orthodontics and Dentofacial Orthopedics, 137 (2010), 586--e1.Google ScholarCross Ref
- Sana, Safiya and Manjunath, G. Mini-Implant Materials: An Overview. IOSR-JDMS, 7 (2013), 15--20.Google Scholar
- Suzuki, Eduardo Yugo and Suzuki, Boonsiva. Maxillary molar distalization with the indirect Palatal miniscrew for Anchorage and Distalization Appliance (iPANDA). ORTHODONTICS: The Art & Practice of Dentofacial Enhancement, 14 (2013).Google Scholar
- Wood, Sarah A., Strait, David S., Dumont, Elizabeth R., Ross, Callum F., and Grosse, Ian R. The effects of modeling simplifications on craniofacial finite element models: the alveoli (tooth sockets) and periodontal ligaments. Journal of biomechanics, 44 (2011), 1831--1838.Google Scholar
- Yamada, Kazuyo, Kuroda, Shingo, Deguchi, Toru, Takano-Yamamoto, Teruko, and Yamashiro, Takashi. Distal movement of maxillary molars using miniscrew anchorage in the buccal interradicular region. The Angle orthodontist, 79 (2009), 78--84.Google Scholar
- Yu, Il-Jun, Kook, Yoon-Ah, Sung, Sang-Jin, Lee, Kee-Joon, Chun, Youn-Sic, and Mo, Sung-Seo. Comparison of tooth displacement between buccal mini-implants and palatal plate anchorage for molar distalization: a finite element study. The European Journal of Orthodontics, 36 (2011), 394--4.Google ScholarCross Ref
Index Terms
- Comparison of Molar Distalization Devices in a Treatment of Malocclusion Class II: Finite Element Analysis
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