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Lin HK, Lin JCY, Pan YH, Salamanca E, Chang YT, Hsu YS, Wu YF, Lin CK, Dorj O, Chang WJ. Peri-Implant Marginal Bone Changes around Dental Implants with Platform-Switched and Platform-Matched Abutments: A Retrospective 5-Year Radiographic Evaluation. J Pers Med 2022; 12:1226. [PMID: 36013175 PMCID: PMC9409950 DOI: 10.3390/jpm12081226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/20/2022] [Accepted: 07/25/2022] [Indexed: 11/16/2022] Open
Abstract
Preserving the marginal bone level (MBL) is essential for the long-term success of dental implant therapy, and bone remodeling around dental implants is considered to vary with time. Numerous studies comparing the platform-switching (PS) and platform-matching (PM) dental implants have indicated that PS dental implants showed a lesser reduction for the MBL, and the majority of them had a relatively short period. This study aimed to evaluate vertical and horizontal bone defects by using digital periapical radiographs to examine the changes in MBL around PM and PS dental implants over 5 years after functional loading. The vertical MBL (vMBL) was measured from the implant-abutment junction to the first bone-to-implant contact. The horizontal MBL (hMBL) was measured from the implant-abutment junction to the bone crest. All data were presented as means ± standard errors. Paired and independent t-tests with Welch's correction were used to analyze the data. A total of 61 dental implants in 38 patients after 5 years of functional loading were evaluated. Over time, PS dental implants were more likely to gain bone; by contrast, PM dental implants were more likely to lose bone during the observation time. Changes in vMBL for PS dental implants were significantly less than those for PM dental implants at 1-year (p = 0.045), 3-year (p = 0.021), and 5-year (p = 0.010) loading. Likewise, changes in hMBL for PS dental implants were significantly smaller than in those for PM dental implants at 3-year (p = 0.021) and 5-year (p = 0.006) loading; however, the changes were minimal in both approaches. PS dental implants had a significant increment in the percentage of bone integration, whereas that for PM dental implants dropped over time, with no significance. In PS dental implants that occlude with natural teeth, vertical and horizontal bone gain was observed, and it was significant at 3 years (p = 0.023). A significant horizontal bone gain was observed in the opposing natural teeth at 3-year (p = 0.002) and 5-year loading (p = 0.002). The PS concept appears to preserve more MBL around dental implants by stabilizing the vMBL and hMBL over a 5-year period. A minimal marginal bone change was detected in both concepts. The opposing natural teeth at PS dental implants showed a favorable effect on marginal bone tissues.
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Affiliation(s)
- Hsi-Kuei Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-K.L.); (J.C.-Y.L.); (Y.-H.P.); (E.S.); (Y.-S.H.); (Y.-F.W.); (C.-K.L.)
- School of Oral Hygiene, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
- Dental Department, Taipei Medical University, Shuang-Ho Hospital, New Taipei City 235, Taiwan
| | - Jerry Chin-Yi Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-K.L.); (J.C.-Y.L.); (Y.-H.P.); (E.S.); (Y.-S.H.); (Y.-F.W.); (C.-K.L.)
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA 01238, USA
| | - Yu-Hwa Pan
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-K.L.); (J.C.-Y.L.); (Y.-H.P.); (E.S.); (Y.-S.H.); (Y.-F.W.); (C.-K.L.)
- Department of Dentistry, Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Graduate Institute of Dental and Craniofacial Science, Chang Gung University, Taoyuan 333, Taiwan
- School of Dentistry, College of Medicine, China Medical University, Taichung 404, Taiwan
| | - Eisner Salamanca
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-K.L.); (J.C.-Y.L.); (Y.-H.P.); (E.S.); (Y.-S.H.); (Y.-F.W.); (C.-K.L.)
| | - Yi-Ting Chang
- Department of Dentistry, En Chu Kong Hospital, New Taipei City 237, Taiwan;
| | - Yung-Szu Hsu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-K.L.); (J.C.-Y.L.); (Y.-H.P.); (E.S.); (Y.-S.H.); (Y.-F.W.); (C.-K.L.)
- Dental Department, Taipei Medical University, Shuang-Ho Hospital, New Taipei City 235, Taiwan
| | - Yi-Fan Wu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-K.L.); (J.C.-Y.L.); (Y.-H.P.); (E.S.); (Y.-S.H.); (Y.-F.W.); (C.-K.L.)
| | - Chin-Kai Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-K.L.); (J.C.-Y.L.); (Y.-H.P.); (E.S.); (Y.-S.H.); (Y.-F.W.); (C.-K.L.)
- Department of Dentistry, En Chu Kong Hospital, New Taipei City 237, Taiwan;
| | - Odontuya Dorj
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-K.L.); (J.C.-Y.L.); (Y.-H.P.); (E.S.); (Y.-S.H.); (Y.-F.W.); (C.-K.L.)
- Department of Dental Technology and Dental Hygiene, School of Dentistry, Mongolian National University of Medical Sciences, Ulaanbaatar 14210, Mongolia
| | - Wei-Jen Chang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (H.-K.L.); (J.C.-Y.L.); (Y.-H.P.); (E.S.); (Y.-S.H.); (Y.-F.W.); (C.-K.L.)
- Dental Department, Taipei Medical University, Shuang-Ho Hospital, New Taipei City 235, Taiwan
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