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A non-invasive laser application for decementation of prosthetic restorations
Scientific Programme (On Demand)
Session Description
A non-invasive laser application for decementation of prosthetic restorations
During dental procedures, we can encounter failures with prosthetic restorations. Cementation failures in fixed partial dentures are caused by several factors other than the type of cement, such as crown height, resistance and retention, remaining tooth structure after preparation, occlusion, chewing habits and others. For many years, metal ceramic restorations were the gold standard in dentistry. However, patient’s aesthetic demands of natural teeth have driven dentist to use all-ceramic restorations. Removal of cement retained implant crowns can be difficult and often requires sectioning of the prosthesis by rotary instruments. Dental implants and associated restorations are growing in popularity among the proposed treatment solutions. With the increase in implants use, there is a growing number of complications which lead to prosthetic revisions. Replacing cemented all-ceramic crown or retrieving a cemented crown to gain access to a loose abutment screw can be a common problem in a dental office. In such cases a novel usage of Erbium laser can be applied. It can be used to remove fixed prostheses by irradiation leading to evaporation of water and monomer molecules in luting cement between abutment and crown. Er:YAG laser has been explored in debonding of various dental restorations and appliances, including veneer restorations, orthodontic brackets and crowns from natural teeth without damage or causing excess thermal disturbance to the dental pulp. The goal for this lecture is to present the study of non-invasive retrieval of lithium disilicate crowns from implants abutments cemented in two different permanent cements and atraumatic glass-fibre removal, using safe parameters with erbium laser.
Learning Objectives
• Laser removal of cement retained implant crown
• How to debonded glassfibre post from the root canal using laser
• Retrievability of the lithium disilicate crown- non-invasive method
• Safe debonding orthodontics brackets with laser
During dental procedures, we can encounter failures with prosthetic restorations. Cementation failures in fixed partial dentures are caused by several factors other than the type of cement, such as crown height, resistance and retention, remaining tooth structure after preparation, occlusion, chewing habits and others. For many years, metal ceramic restorations were the gold standard in dentistry. However, patient’s aesthetic demands of natural teeth have driven dentist to use all-ceramic restorations. Removal of cement retained implant crowns can be difficult and often requires sectioning of the prosthesis by rotary instruments. Dental implants and associated restorations are growing in popularity among the proposed treatment solutions. With the increase in implants use, there is a growing number of complications which lead to prosthetic revisions. Replacing cemented all-ceramic crown or retrieving a cemented crown to gain access to a loose abutment screw can be a common problem in a dental office. In such cases a novel usage of Erbium laser can be applied. It can be used to remove fixed prostheses by irradiation leading to evaporation of water and monomer molecules in luting cement between abutment and crown. Er:YAG laser has been explored in debonding of various dental restorations and appliances, including veneer restorations, orthodontic brackets and crowns from natural teeth without damage or causing excess thermal disturbance to the dental pulp. The goal for this lecture is to present the study of non-invasive retrieval of lithium disilicate crowns from implants abutments cemented in two different permanent cements and atraumatic glass-fibre removal, using safe parameters with erbium laser.
Learning Objectives
• Laser removal of cement retained implant crown
• How to debonded glassfibre post from the root canal using laser
• Retrievability of the lithium disilicate crown- non-invasive method
• Safe debonding orthodontics brackets with laser