Treatment Effects of Maxillary Molar Distalization with Palatal Plate: CBCT Synthesized Cephalometric Analysis
3
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The purpose of this study was to evaluate the clinical treatment effects of molar distalization with palatal plate using 2 dimensional (2D) cephalograms converted from CBCT. This retrospective clinical study included 20 consecutively treated patients (11 male, 9 female), with an average age of 15±3 years. Cephalometric analysis was made on 2D cephalogram images derived from 3D CBCT. Skeletal, dental, and soft tissue measurements were evaluated. Through the use of palatal plate, clinically successful distalization of maxillary molars was achieved. Statistically significant changes in molars positions were observed between T1 and T2 (before and after the distal movement). The first molar and second premolar distalization were 3.98±1.23 mm and 1.17±3.54 mm with distal tipping of 3.17±4.97°and 3.21±2.86°, respectively. Moreover, the incisors were retracted 3.12±3.24 mm, with 10.31±4.98°of tipping and 1.75±1.54 mm of extrusion. All skeletal changes during treatment were not significant. The upper and lower lips were retracted 1.57 and 1.49 mm respectively. The palatal plate could be a valid clinical option for efficient distalization of the maxillary first molars in Class II patients.
Abstract
The purpose of this study was to evaluate the clinical treatment effects of molar distalization with palatal plate using 2 dimensional (2D) cephalograms converted from CBCT. This retrospective clinical study included 20 consecutively treated patients (11 male, 9 female), with an average age of 15±3 years. Cephalometric analysis was made on 2D cephalogram images derived from 3D CBCT. Skeletal, dental, and soft tissue measurements were evaluated. Through the use of palatal plate, clinically successful distalization of maxillary molars was achieved. Statistically significant changes in molars positions were observed between T1 and T2 (before and after the distal movement). The first molar and second premolar distalization were 3.98±1.23 mm and 1.17±3.54 mm with distal tipping of 3.17±4.97°and 3.21±2.86°, respectively. Moreover, the incisors were retracted 3.12±3.24 mm, with 10.31±4.98°of tipping and 1.75±1.54 mm of extrusion. All skeletal changes during treatment were not significant. The upper and lower lips were retracted 1.57 and 1.49 mm respectively. The palatal plate could be a valid clinical option for efficient distalization of the maxillary first molars in Class II patients.
참고문헌 (29)
- Melsen B, "A rational approach to orthodontic anchorage", Prog Orthod, 1, pp.10~22 (1999)
- Bolla E, "Evaluation of maxillary molar distalization with the distal jet: a comparison with other contemporary methods", Angle Orthod, 72, pp.481~494 (2002)
- Kinzinger GS, "Efficiency of a pendulum appliance for molar distalization related to second and third molar eruption stage", Am J Orthod Dentofacial Orthop, 125, pp.8~23 (2004)
- Byloff FK, "Distal molar movement using the pendulum appliance. Part 1: clinical and radiological evaluation", Angle Orthod, 67, pp.249~260 (1997)
- Bussick TJ, "Dentoalveolar and skeletal changes associated with the pendulum appliance", Am J Orthod Dentofacial Orthop, 117, pp.333~343 (2000)
- Scuzzo G, "Maxillary molar distalization with a modified pendulum appliance", J Clin Orthod, 33, pp.645~650 (1999)
- Wong AM, "The use of pendulum appliance inthe treatment of Class II malocclusion", Br Dent J, 187, pp.367~370 (1999)
- Ghosh J, "Evaluation of an intraoral maxillary molar distalization technique", Am J Orthod Dentofacial Orthop, 110, pp.639~646 (1996)
- Byloff FK, "Distal molar movement using the pendulum appliance. Part 1: clinical and radiological evaluation", Angle Orthod, 67, pp.249~260 (1997)
- Byloff FK, "Distal molar movement using the pendulum appliance. Part 2: the effects of maxillary molar root uprighting bends", Angle Orthod, 67, pp.261~270 (1997)
- Bussick TJ, "Dentoalveolar and skeletal changes associated with the pendulum appliance", Am J Orthod Dentofacial Orthop, 117, pp.333~343 (2000)
- Chiu PP, "A comparison of two intraoral molar distalization appliances: distal jet versus pendulum", Am J Orthod Dentofacial Orthop, 128, pp.353~365 (2005)
- Kinzinger GSM, "Efficiency of a pendulum appliance for molar distalization related to second and third molar eruption stage", Am J Orthod Dentofacial Orthop, 125, pp.8~23 (2004)
- Kinzinger GSM, "Molar distalization with a modified pendulum appliance in vitro analysis of the force systems and in vivo study in children and adolescents", Angle Orthod, 75, pp.558~567 (2005)
- Graber TM, "Orthodontics:current principles and techniques" (2005), Elsevier
- Kyung SH, "Distalization of maxillary molars with a midpalatal miniscrew", J Clin Orthod, 37, pp.22~26 (2003)
- Chung KR, "The miniplate with tube for skeletal anchorage", J Clin Orthod, 36, pp.407~412 (2002)
- Kook YA, "A Modified palatal anchorage plate for simple and efficient distalization", J Clin Orthod, 44, pp.719~730 (2010)
- Bruno FG, "Accuracy and reliability of craniometric measurements on lateral cephalometry and 3D measurements on CBCT scans", Angle Orthod, 81, pp.26~25 (2011)
- Kumar V, "In vivo comparison of conventional and cone beam CT synthesized cephalograms", Angle Orthod, 78, pp.873~879 (2008)
- Lamichane M, "Accuracy of reconstructed images from cone-beam computed tomography scans", Am J Orthod Dentofacial Orthop, 136, pp.156~ (2009)
- Yu IJ, "Comparison of tooth displacement between buccal mini-implants and palatal plate anchorage for molar distalization: a finite element study", European J Ortho (2011)
- Escobar SA, "Distalization of maxillary molars with the bonesupported pendulum: a clinical study", Am J Orthod Dentofacial Orthop, 131, pp.545~549 (2007)
- Óncag′′ G, "Osseointegrated implants with pendulum springs for maxillary molar distalization:a cephalometric study", Am J Orthod Dentofacial Orthop, 131, pp.16~26 (2007)
- Gelgor IE, "Intraosseous screw-supported upper molar distalization", Angle Orthod, 74, pp.836~848 (2004)
- Keles A, "Bodily distalization of molars with absolute anchorage", Angle Orthod, 73, pp.471~482 (2003)
- Kircelli BH, "Maxillary molar distaization with a bone-anchoraged pendulum appliance", Angle Orthod, 76, pp.650~659 (2005)
- Vandana K, "In vivo comparison of conventional and cone beam CT synthesized cephalograms", Angle Orthod, 78, pp.873~879 (2008)
- Natalia Z, "Cephalometric measurements from 3D reconstructed images compared with conventional 2D images", Angle Orthod, 81, pp.856~864 (2011)