Bone changes around the maxillary posterior teeth opposing the implants in mandible: a clinical study
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Purpose: When the edentulous area is restored by implant prostheses, the opposing hypofunctioned teeth will receive physiologic mechanical stimuli. This study evaluated the bone changes around the maxillary teeth opposing an implant restoration installed in the mandibular posterior area. Materials and Methods: Radiographs of the opposing teeth were taken at prostheses delivery (baseline), 3 and 6 months later. A customized film holding device was fabricated to standardize the projection geometry for the serial radiographs of the opposing teeth. The gray values of the region of interest of each digital image were compared according to time. Repeated measured analysis of variance was performed at the 95% significance level. Results: The gray values of the alveolar bone around the antagonist teeth of implants increased with time. The changes in gray values of the middle area were greater than those of the crestal area. However, the gray values of the mesial and distal areas were not different. The changes in gray values were different according to the unloaded time. Conclusion: A change in bone tissue will occur if a proper physiologic load is again applied to the bone tissues around a hypofunctioned tooth.
Abstract
Purpose: When the edentulous area is restored by implant prostheses, the opposing hypofunctioned teeth will receive physiologic mechanical stimuli. This study evaluated the bone changes around the maxillary teeth opposing an implant restoration installed in the mandibular posterior area. Materials and Methods: Radiographs of the opposing teeth were taken at prostheses delivery (baseline), 3 and 6 months later. A customized film holding device was fabricated to standardize the projection geometry for the serial radiographs of the opposing teeth. The gray values of the region of interest of each digital image were compared according to time. Repeated measured analysis of variance was performed at the 95% significance level. Results: The gray values of the alveolar bone around the antagonist teeth of implants increased with time. The changes in gray values of the middle area were greater than those of the crestal area. However, the gray values of the mesial and distal areas were not different. The changes in gray values were different according to the unloaded time. Conclusion: A change in bone tissue will occur if a proper physiologic load is again applied to the bone tissues around a hypofunctioned tooth.
참고문헌 (17)
- Misch CE, "Contemporary implant dentistry", pp.327~343 (2007), CV Mosby
- Katz JL, "The structure and biomechanics of bone", Symp Soc Exp Biol, 34, pp.137~168 (1980)
- Frost HM, "Bone “mass” and the “mechanostat”: a proposal", Anat Rec, 219, pp.1~9 (1987)
- Steflik DE, "Histologic observations of bone remodeling adjacent to endosteal dental implants", J Oral Implantol, 21, pp.96~106 (1995)
- Romanos GE, "Bone-implant interface around titanium implants under different loading conditions : a histomorphometrical analysis in the Macaca Fascicularis monkeys", J Periodontol, 74, pp.1483~1490 (2003)
- Johnson RB, "Effect of altered occlusal function on transseptal ligament and new bone thicknesses in the periodontium of the rat", Am J Anat, 187, pp.91~97 (1990)
- Kinoshita Y, "The effect of hypofunction on the mechanical properties of the periodontium in the rat mandibular first molar", Arch Oral Biol, 27, pp.881~885 (1982)
- Shimomoto Y, "Effects of occlusal stimuli on alveolar", jaw bone formation, 2007, pp.86, 47~51
- Motokawa M, "Effects of long-term occlusal hypofunction and its recovery on the morphogenesis of molar roots and the periodontium in rats", Angle Orthod, 83, pp.597~604 (2013)
- Jeffcoat MK, "Extraoral control of geometry for digital subtraction radiography", J Periodontal Res, 22, pp.369~402 (1987)
- Meijer HJ, "Standardized radiographs of the alveolar crest around implants in the mandible", J Prosthet Dent, 68, pp.318~321 (1992)
- Marx RE, "“Mandibular and facial reconstruction” rehabilitation of the head and neck cancer patient", Bone, 19, pp.59S~82S (1996)
- Stanford CM, "Issues and considerations in dental implant occlusion: what do we know, and what do we need to find out?", J Calif Dent Assoc, 33, pp.329~336 (2005)
- 이미란, "Correlation assessment between resonance frequency analysis andradiographic method according to peri-implant bone change", 대한치과보철학회지, 43(6), pp.736~744 (2005), 대한치과보철학회
- Gröndahl K, "Inter-and intraobserver variability in radiographic bone level assessment at Brånemark fixtures", Clin Oral Implants Res, 9, pp.243~250 (1998)
- Jeon PD, "Analysis of stress in the periodontium of the maxillary first molar with a three-dimensional finite element model", Am J Orthod Dentofacial Orthop, 115, pp.267~274 (1999)
- Carneiro LS, "Digital subtraction radiography evaluation of longitudinal bone density changes around immediate loading implants : a pilot study", Dentomaxillofac Radiol, 41, pp.241~247 (2012)