Angulation between Long Axis of Anterior Teeth and Alveolar Process, and Thickness of Alveolar Bone
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The main aim of dental implant placement on the anterior region is to recover the function and esthetics. Therefore, this study examined the angulation between the long axis of the anterior teeth and the alveolar process, and thickness of the alveolar bone on the anterior region. Twenty-five cadaver heads (18 maxillae and 23 mandibles) were examined (16 male and 9 female, mean: 56.7years). The angulation between the long axis of the anterior teeth and the alveolar process was measured, and the alveolar bone thickness was measured in the three levels (crest; C, middle; M, apex; A) on the labial and lingual sides. All data was analyzed statistically using one-way ANOVA. The maxillary anterior teeth showed two to three times more lingual inclination than the mandibular teeth. The difference in maxillary alveolar bone thickness on the labial and lingual sides was significant in all levels,particularly in the apex. The mandibular alveolar bone thickness on the labial and lingual side was significantly different only in the apex. In conclusion, the alveolar bone thickness on the anterior region was too thin, and the long axis of the maxillary anterior teeth showed more lingual inclination than the alveolar process. Therefore, clinicians need to be a detailed assessment of the labial alveolar bone for dental implant placement.
Abstract
The main aim of dental implant placement on the anterior region is to recover the function and esthetics. Therefore, this study examined the angulation between the long axis of the anterior teeth and the alveolar process, and thickness of the alveolar bone on the anterior region. Twenty-five cadaver heads (18 maxillae and 23 mandibles) were examined (16 male and 9 female, mean: 56.7years). The angulation between the long axis of the anterior teeth and the alveolar process was measured, and the alveolar bone thickness was measured in the three levels (crest; C, middle; M, apex; A) on the labial and lingual sides. All data was analyzed statistically using one-way ANOVA. The maxillary anterior teeth showed two to three times more lingual inclination than the mandibular teeth. The difference in maxillary alveolar bone thickness on the labial and lingual sides was significant in all levels,particularly in the apex. The mandibular alveolar bone thickness on the labial and lingual side was significantly different only in the apex. In conclusion, the alveolar bone thickness on the anterior region was too thin, and the long axis of the maxillary anterior teeth showed more lingual inclination than the alveolar process. Therefore, clinicians need to be a detailed assessment of the labial alveolar bone for dental implant placement.
참고문헌 (25)
- Araujo MG, "Dimensional ridge alterations following tooth extraction. An experimental study in the dog", J Clin Periodontol, 32, pp.212~218 (2005)
- Araujo MG, "Ridge alterations following implant placement in fresh extraction sockets: an experimental study in the dog", J Clin Periodontol, 32, pp.645~652 (2005)
- Bernard JP, "Longterm vertical changes of the anterior maxillary teeth adjacent to single implants in young and mature adults. A retrospective study", J Clin Periodontol, 31, pp.1024~1028 (2004)
- Buser D, "Optimizing esthetics for implant restorations in the anterior maxilla: anatomic and surgical consideration", Int J Oral Maxillofac Implants, 19, pp.43~61 (2004)
- Cardaropoli G, "Dynamics of bone tissue formation in tooth extraction sites. An experimental study in dogs", J Clin Periodontol, 30, pp.809~818 (2003)
- Cardaropoli G, "Tissue alterations at implant-supported single-tooth replacements: a 1- year prospective clinical study", Clin Oral Impl Res, 17, pp.165~171 (2006)
- Clelland NL, "A threedimensional finite element stress analysis of angled abutments for an implant placed in the anterior maxilla", J Prosthodont, 4(2), pp.95~100 (1995)
- Covani U, "Bucco-lingual crestal bone changes after immediate and delayed implant placement", J Periodontol, 75, pp.1605~1612 (2004)
- Covani U, "Vertical crestal bone changes around implants placed into fresh extraction sockets", J Periodontol, 78, pp.810~815 (2007)
- Flanagan D, "A comparison of facial and lingual cortical thickness in edentulous maxillary and mandibular sites measured on Computerized Tomograms", J Oral Implantol, 34, pp.256~258 (2008)
- Juodzbalys G, "Soft and hard tissue assessment of immediate implant placement: a case series", Clin Oral Impl Res, 18, pp.1~7 (2007)
- Kao HC, "The influence of abutment angulation on micromotion level for immediately loaded dental implants: a 3-D finite element analysis", Int J Oral Maxillofac Implants, 23(4), pp.623~630 (2008)
- Katranji A, "Cortical bone thickness in dentate and edentulous human cadavers", J Periodontol, 78, pp.874~878 (2007)
- Kim JH, "Morphometric analysis of the anterior region of the maxillary bone for immediate implant placement using micro-CT", Clin Anat, 24, pp.462~468 (2011)
- Masumoto T, "Relationships among facial type, buccolingual molar inclination, and cortical bone thickness of the mandible", Eur J Orthod, 23, pp.15~23 (2001)
- Miyamoto I, "Influence of cortical bone thickness and implant length on implant stability at the time of surgery-clinical, prospective, biomechanical, and imaging study", Bone, 37, pp.776~780 (2005)
- Nevins M, "A study of the fate of the buccal wall of extraction sockets of teeth with prominent roots", Int J Periodontics Restorative Dent, 26, pp.19~29 (2006)
- Park HD, "Topography of the outer mandibular symphyseal region with reference to the autogenous bone graft", Int J Oral Maxillofac Surg, 33, pp.781~785 (2004)
- Schropp L, "Bone healing and soft tissue contour changes following single-tooth extraction: a clinical and radiographic 12 month prospective study", Int J Periodontics Restorative Dent, 23, pp.313~323 (2003)
- Schwartz-Dabney CL, "Variations in cortical material properties throughout the human dentate mandible", American J Physi Anthropol, 120, pp.252~277 (2003)
- Swasty D, "Anthropometric analysis of the human mandibular cortical bone as assessed by cone-beam computed tomography", J Oral Maxillofac Surg, 67, pp.491~500 (2009)
- Tsunori M, "Relationship between facial types and tooth and bone characteristics of the mandible obtained by CT scanning", Angle Orthod, 68, pp.557~562 (1998)
- van Loenen M, "Anterior tooth morphology and its effect on torque", Eur J Orthod, 27(3), pp.258~262 (2005)
- Wagenberg BD, "Immediate implant placement on removal of the natural tooth: retrospective analysis of 1,081 implants", Compendium, 22(5), pp.399~412 (2001)
- Yoo RH, "Changes in crestal bone levels for immediately loaded implants", Int J Oral Maxillofac Implants, 21, pp.253~261 (2006)