Three-dimensional evaluation of bracket placement accuracy and excess bonding adhesive depending on indirect bonding technique and bracket geometry: an in-vitro study
Abstract Background This study aimed at comparing bracket placement and excess bonding adhesive depending on different indirect bonding (IDB) techniques and bracket geometries. Methods Four hundred eighty brackets without hook (WOH) and 360 with hook (WH) were placed on 60 plaster models. Three IDB...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2020-08-01
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| Series: | Head & Face Medicine |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s13005-020-00231-5 |
| _version_ | 1818776034235908096 |
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| author | Stephan Christian Möhlhenrich Constantin Alexandridis Florian Peters Kristian Kniha Ali Modabber Golamreza Danesh Ulrike Fritz |
| author_facet | Stephan Christian Möhlhenrich Constantin Alexandridis Florian Peters Kristian Kniha Ali Modabber Golamreza Danesh Ulrike Fritz |
| author_sort | Stephan Christian Möhlhenrich |
| collection | DOAJ |
| description | Abstract Background This study aimed at comparing bracket placement and excess bonding adhesive depending on different indirect bonding (IDB) techniques and bracket geometries. Methods Four hundred eighty brackets without hook (WOH) and 360 with hook (WH) were placed on 60 plaster models. Three IDB techniques were tested: polyvinyl-siloxane vacuum-form (PVS-VF), polyvinyl-siloxane putty (PVS-putty), and translucence double-polyvinyl-siloxane (double-PVS). PVS-VF and PVS-putty were combined with chemically, and double-PVS was combined with light cured bonding adhesive. Virtual images of models before and after bracket transfer were generated, and computerized images were compared. Linear, angular deviations, and excess bonding adhesive were measured. Results Linear differences between the three groups were obtained for PVS-VF (WH: 1.08, SD 0.50 mm; WOH: 0.86, SD 0.25 mm), PVS-putty (WH: 0.73, SD 0.51 mm; WOH: 0.58, SD 0.28 mm), and double-PVS (WH: 0.65, SD 0.45 mm; WOH: 0.59, SD 0.33 mm) (P < 0.001). Hooks affected bracket placement accuracy in PVS-VF (P < 0.001) and PVS-putty (P = 0.029). Angular differences were observed for brackets WOH between the PVS-VF (0.64, SD 0.48°) and double-PVS group (0.92, SD 0.76°) (P < 0.001) and within double-PVS group (WH: 0.66, SD 0.51° vs. WOH: 0.92, SD 0.76°, P < 0.001). Highest amount of excess adhesive was obtained for PVS-putty group (WH: 6.54, SD 5.31 mm 2). Conclusions The double-PVS group revealed promising results with respect to transfer accuracy, whereas the PVS-VF group provided least excess bonding adhesive. Basically, hooks lead to lower precision and higher excess bonding adhesive. PVS trays for IDB generate high bracket placement accuracy. PVS-putty is the easiest to handle with and also the cheapest, but leads to large excess bonding adhesive, especially in combination with hooked brackets or tubes. |
| first_indexed | 2024-12-18T11:06:31Z |
| format | Article |
| id | doaj.art-a8cfb919aab94fd0ad74a7b87e51fd33 |
| institution | Directory Open Access Journal |
| issn | 1746-160X |
| language | English |
| last_indexed | 2024-12-18T11:06:31Z |
| publishDate | 2020-08-01 |
| publisher | BMC |
| record_format | Article |
| series | Head & Face Medicine |
| spelling | doaj.art-a8cfb919aab94fd0ad74a7b87e51fd332022-12-21T21:10:06ZengBMCHead & Face Medicine1746-160X2020-08-0116111010.1186/s13005-020-00231-5Three-dimensional evaluation of bracket placement accuracy and excess bonding adhesive depending on indirect bonding technique and bracket geometry: an in-vitro studyStephan Christian Möhlhenrich0Constantin Alexandridis1Florian Peters2Kristian Kniha3Ali Modabber4Golamreza Danesh5Ulrike Fritz6Department of Orthodontics, University of Witten/HerdeckeDepartment of Orthodontics and Dentofacial Orthopedics, University Hospital of the RWTH AachenDepartment of Oral and Maxillofacial Surgery, University Hospital of the RWTH AachenDepartment of Oral and Maxillofacial Surgery, University Hospital of the RWTH AachenDepartment of Oral and Maxillofacial Surgery, University Hospital of the RWTH AachenDepartment of Orthodontics, University of Witten/HerdeckeDepartment of Orthodontics and Dentofacial Orthopedics, University Hospital of the RWTH AachenAbstract Background This study aimed at comparing bracket placement and excess bonding adhesive depending on different indirect bonding (IDB) techniques and bracket geometries. Methods Four hundred eighty brackets without hook (WOH) and 360 with hook (WH) were placed on 60 plaster models. Three IDB techniques were tested: polyvinyl-siloxane vacuum-form (PVS-VF), polyvinyl-siloxane putty (PVS-putty), and translucence double-polyvinyl-siloxane (double-PVS). PVS-VF and PVS-putty were combined with chemically, and double-PVS was combined with light cured bonding adhesive. Virtual images of models before and after bracket transfer were generated, and computerized images were compared. Linear, angular deviations, and excess bonding adhesive were measured. Results Linear differences between the three groups were obtained for PVS-VF (WH: 1.08, SD 0.50 mm; WOH: 0.86, SD 0.25 mm), PVS-putty (WH: 0.73, SD 0.51 mm; WOH: 0.58, SD 0.28 mm), and double-PVS (WH: 0.65, SD 0.45 mm; WOH: 0.59, SD 0.33 mm) (P < 0.001). Hooks affected bracket placement accuracy in PVS-VF (P < 0.001) and PVS-putty (P = 0.029). Angular differences were observed for brackets WOH between the PVS-VF (0.64, SD 0.48°) and double-PVS group (0.92, SD 0.76°) (P < 0.001) and within double-PVS group (WH: 0.66, SD 0.51° vs. WOH: 0.92, SD 0.76°, P < 0.001). Highest amount of excess adhesive was obtained for PVS-putty group (WH: 6.54, SD 5.31 mm 2). Conclusions The double-PVS group revealed promising results with respect to transfer accuracy, whereas the PVS-VF group provided least excess bonding adhesive. Basically, hooks lead to lower precision and higher excess bonding adhesive. PVS trays for IDB generate high bracket placement accuracy. PVS-putty is the easiest to handle with and also the cheapest, but leads to large excess bonding adhesive, especially in combination with hooked brackets or tubes.http://link.springer.com/article/10.1186/s13005-020-00231-5Indirect bonding, transfer accuracySiloxane trayBracket, excess adhesive |
| spellingShingle | Stephan Christian Möhlhenrich Constantin Alexandridis Florian Peters Kristian Kniha Ali Modabber Golamreza Danesh Ulrike Fritz Three-dimensional evaluation of bracket placement accuracy and excess bonding adhesive depending on indirect bonding technique and bracket geometry: an in-vitro study Head & Face Medicine Indirect bonding, transfer accuracy Siloxane tray Bracket, excess adhesive |
| title | Three-dimensional evaluation of bracket placement accuracy and excess bonding adhesive depending on indirect bonding technique and bracket geometry: an in-vitro study |
| title_full | Three-dimensional evaluation of bracket placement accuracy and excess bonding adhesive depending on indirect bonding technique and bracket geometry: an in-vitro study |
| title_fullStr | Three-dimensional evaluation of bracket placement accuracy and excess bonding adhesive depending on indirect bonding technique and bracket geometry: an in-vitro study |
| title_full_unstemmed | Three-dimensional evaluation of bracket placement accuracy and excess bonding adhesive depending on indirect bonding technique and bracket geometry: an in-vitro study |
| title_short | Three-dimensional evaluation of bracket placement accuracy and excess bonding adhesive depending on indirect bonding technique and bracket geometry: an in-vitro study |
| title_sort | three dimensional evaluation of bracket placement accuracy and excess bonding adhesive depending on indirect bonding technique and bracket geometry an in vitro study |
| topic | Indirect bonding, transfer accuracy Siloxane tray Bracket, excess adhesive |
| url | http://link.springer.com/article/10.1186/s13005-020-00231-5 |
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