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Conference Paper: RCT Comparing Molar Two-and Three-unit RBBs – Interim Findings
Title | RCT Comparing Molar Two-and Three-unit RBBs – Interim Findings |
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Authors | |
Issue Date | 2018 |
Publisher | International Association for Dental Research. The Proceedings' web site is located at https://iadr.abstractarchives.com/home |
Citation | The 32nd International Association for Dental Research (IADR) Southeast Asian Division & 29th South East Asia Association for Dental Education (SEAADE) Annual Scientific Meeting, Da Nang, Vietnam, 11-14 September 2018, Presentation ID: 0135 How to Cite? |
Abstract | Objectives: Resin-bonded bridges (RBBs) are conservative prostheses requireing minimal tooth reduction. While two-unit cantilever (CL2) RBBs have been shown to be more successful than fixed-fixed counterparts, they are not recommended for molar-sized edentulous spans.
This study reports the interim findings of a randomized-controlled trial comparing three-unit fixed-movable (FM3) and CL2 RBBs for molar-sized spans (8-10 mm). IRB-UW 14-233, Clinicaltrial.gov NCT02239718
Methods: Patients with one or more missing molars and meeting the inclusion/extrusion criteria were recruited and randomized (ratio 1:1) into CL2 (test) or FM3 (control) group. Patients were examined by independent assessors at baseline, 1-, 6-, 12- and 24-month after insertion of RBBs. Abutment teeth mobility were assessed by Periotest and abutment teeth movement were assessed by superimposition of pre- and postoperative digitized teeth. Patient satisfaction was evaluated by 14-items visual analogue scale after insertion of RBBs. Oral health-related quality of life was assessed using Oral Health Impact Factor (OHIP-49).
Results: Fifty-one patients were reviewed and 63 RBBs were inserted with 29 CL2 and 34 FM3 RBBs. Fifty-three patients were reviewed at 1-month, 38 at 6-months, 29 at 12-month and five at 24-month. The majority of these prostheses were provided by undergraduate dental students. Two CL2 and one FM3 RBBs debonded resulting in retention rate of 93.1% and 97.1%. All were rebonded. Seven CL2 abutment teeth has increased in mobility while two of abutment teeth of FM3 increased. No tooth has moved greater than 0.5mm. The mean OHIP-49 scores of CL2 and FM3 groups were 33.1 and 38.2 respectively (p>0.05), whereas the general satisfaction of CL2 and FM3 were 84.1 and 90.1 respectively (p=0.049). No adverse outcomes were reported.
Conclusions: The interim data show that CL2 RBBs can be successfully placed for molar spans with no observable complications. Longer term data will be collected.
UGC-GRF no.17100314 |
Description | Oral Session 3: Prosthodontics and Implantology/ Cariology and Mineralized Tissues(I) - Final Presentation ID: 0135 |
Persistent Identifier | http://hdl.handle.net/10722/277791 |
DC Field | Value | Language |
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dc.contributor.author | Botelho, MG | - |
dc.contributor.author | Lam, YH | - |
dc.date.accessioned | 2019-10-04T08:01:25Z | - |
dc.date.available | 2019-10-04T08:01:25Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | The 32nd International Association for Dental Research (IADR) Southeast Asian Division & 29th South East Asia Association for Dental Education (SEAADE) Annual Scientific Meeting, Da Nang, Vietnam, 11-14 September 2018, Presentation ID: 0135 | - |
dc.identifier.uri | http://hdl.handle.net/10722/277791 | - |
dc.description | Oral Session 3: Prosthodontics and Implantology/ Cariology and Mineralized Tissues(I) - Final Presentation ID: 0135 | - |
dc.description.abstract | Objectives: Resin-bonded bridges (RBBs) are conservative prostheses requireing minimal tooth reduction. While two-unit cantilever (CL2) RBBs have been shown to be more successful than fixed-fixed counterparts, they are not recommended for molar-sized edentulous spans. This study reports the interim findings of a randomized-controlled trial comparing three-unit fixed-movable (FM3) and CL2 RBBs for molar-sized spans (8-10 mm). IRB-UW 14-233, Clinicaltrial.gov NCT02239718 Methods: Patients with one or more missing molars and meeting the inclusion/extrusion criteria were recruited and randomized (ratio 1:1) into CL2 (test) or FM3 (control) group. Patients were examined by independent assessors at baseline, 1-, 6-, 12- and 24-month after insertion of RBBs. Abutment teeth mobility were assessed by Periotest and abutment teeth movement were assessed by superimposition of pre- and postoperative digitized teeth. Patient satisfaction was evaluated by 14-items visual analogue scale after insertion of RBBs. Oral health-related quality of life was assessed using Oral Health Impact Factor (OHIP-49). Results: Fifty-one patients were reviewed and 63 RBBs were inserted with 29 CL2 and 34 FM3 RBBs. Fifty-three patients were reviewed at 1-month, 38 at 6-months, 29 at 12-month and five at 24-month. The majority of these prostheses were provided by undergraduate dental students. Two CL2 and one FM3 RBBs debonded resulting in retention rate of 93.1% and 97.1%. All were rebonded. Seven CL2 abutment teeth has increased in mobility while two of abutment teeth of FM3 increased. No tooth has moved greater than 0.5mm. The mean OHIP-49 scores of CL2 and FM3 groups were 33.1 and 38.2 respectively (p>0.05), whereas the general satisfaction of CL2 and FM3 were 84.1 and 90.1 respectively (p=0.049). No adverse outcomes were reported. Conclusions: The interim data show that CL2 RBBs can be successfully placed for molar spans with no observable complications. Longer term data will be collected. UGC-GRF no.17100314 | - |
dc.language | eng | - |
dc.publisher | International Association for Dental Research. The Proceedings' web site is located at https://iadr.abstractarchives.com/home | - |
dc.relation.ispartof | IADR-SEA (International Association for Dental Research (Southeast Asian Division)) Annual Scientific Meeting, Da Nang, Vietnam, 2018 | - |
dc.title | RCT Comparing Molar Two-and Three-unit RBBs – Interim Findings | - |
dc.type | Conference_Paper | - |
dc.identifier.email | Botelho, MG: botelho@hkucc.hku.hk | - |
dc.identifier.email | Lam, YH: retlaw@hku.hk | - |
dc.identifier.authority | Botelho, MG=rp00033 | - |
dc.identifier.authority | Lam, YH=rp02183 | - |
dc.identifier.hkuros | 307034 | - |
dc.identifier.spage | Presentation ID: 0135 | - |
dc.identifier.epage | Presentation ID: 0135 | - |
dc.publisher.place | Da Nang, Vietnam | - |