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Conference Paper: New Testing Model for Evaluation of Internal Adptaion of Tooth-coloured Restorations
Title | New Testing Model for Evaluation of Internal Adptaion of Tooth-coloured Restorations |
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Authors | |
Issue Date | 2018 |
Citation | 2018 IADR/PER General Session & Exhibition, London, UK, 25-28 July 2018 How to Cite? |
Abstract | Objectives: To introduce an experimental model for evaluation of internal adaptation of resin-based composite restorations Methods: An experimental ‘custom-made’ ‘radio-opaque’ colorless acrylic tooth model with standard MOD cavity preparation was used. A micro-CT scanning was performed using micro-CT machine SkyScan 1172 (Bruker microCT, Kontich, Belgium). Also, restored acrylic teeth were vertically sectioned into two halves (mesio-distally) in the center of the restoration in order to expose the restoration/tooth interface. The sectioned specimens were ultrasonically cleaned and restoration/tooth interfaces were examined under PLM. The same specimens were gold sputter coated and examined by FESEM. The specimens were stored inside a dry-keeper auto desiccator cabinet for 3 months and re-examined using the same FESEM to check the stability of the previous observations. Results: This new testing tooth model was detectable by 3D-temography and the internal adaptation of the restoration can be easily assessed by micro CT. Also, this non-invasive testing method can localize voids or artefacts occurred during the insertion of restorative material with high accuracy.The resin-based composite restoration portion can be easily detected with PLM. Also, tooth substrate can be easily differentiated from resin composite material, which allows accurate assessment of the restoration/tooth interface. The outcome of SEM observations showed the stability of this tooth/restoration interface overtime. Conclusions: In light of the results of curent study, the new testing model seems to be a valid method for evaluation of the internal adaptation of resin-based composite restorations. |
Persistent Identifier | http://hdl.handle.net/10722/258406 |
DC Field | Value | Language |
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dc.contributor.author | Hamama, HHHE | - |
dc.date.accessioned | 2018-08-22T01:37:57Z | - |
dc.date.available | 2018-08-22T01:37:57Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | 2018 IADR/PER General Session & Exhibition, London, UK, 25-28 July 2018 | - |
dc.identifier.uri | http://hdl.handle.net/10722/258406 | - |
dc.description.abstract | Objectives: To introduce an experimental model for evaluation of internal adaptation of resin-based composite restorations Methods: An experimental ‘custom-made’ ‘radio-opaque’ colorless acrylic tooth model with standard MOD cavity preparation was used. A micro-CT scanning was performed using micro-CT machine SkyScan 1172 (Bruker microCT, Kontich, Belgium). Also, restored acrylic teeth were vertically sectioned into two halves (mesio-distally) in the center of the restoration in order to expose the restoration/tooth interface. The sectioned specimens were ultrasonically cleaned and restoration/tooth interfaces were examined under PLM. The same specimens were gold sputter coated and examined by FESEM. The specimens were stored inside a dry-keeper auto desiccator cabinet for 3 months and re-examined using the same FESEM to check the stability of the previous observations. Results: This new testing tooth model was detectable by 3D-temography and the internal adaptation of the restoration can be easily assessed by micro CT. Also, this non-invasive testing method can localize voids or artefacts occurred during the insertion of restorative material with high accuracy.The resin-based composite restoration portion can be easily detected with PLM. Also, tooth substrate can be easily differentiated from resin composite material, which allows accurate assessment of the restoration/tooth interface. The outcome of SEM observations showed the stability of this tooth/restoration interface overtime. Conclusions: In light of the results of curent study, the new testing model seems to be a valid method for evaluation of the internal adaptation of resin-based composite restorations. | - |
dc.language | eng | - |
dc.relation.ispartof | 2018 IADR/PER General Session & Exhibition | - |
dc.title | New Testing Model for Evaluation of Internal Adptaion of Tooth-coloured Restorations | - |
dc.type | Conference_Paper | - |
dc.identifier.email | Hamama, HHHE: hamama@hku.hk | - |
dc.identifier.authority | Hamama, HHHE=rp02187 | - |
dc.identifier.hkuros | 287705 | - |
dc.publisher.place | London, UK | - |