1. Cementation in the age of digital dentistry. A review of the literature.
Hadzhigaev, Viktor1; Zlatev, Stefan1; Vlahova, Angelina2; Todorov, Georgi3.
1 Assistant Professor, Department of Prosthetic Dental Medicine, Faculty of dental medicine, Medical University Plovdiv
2 Associate Professor, Department of Prosthetic Dental Medicine, Faculty of dental medicine, Medical University Plovdiv
3 Professor, Department of Prosthetic Dental Medicine, Faculty of dental medicine, Medical University Plovdiv
Introduction:
Cementation is the final stage in clinical cases restored with FPD’s. Since the introduction of CAD/CAM technology a rapid increase in the usage of constructions based on zirconium dioxide is observed. This material and its modifications may require a different cementation protocol.
Materials and Method:
A literature search concerning cementation of ZrO2 based FPD’s manufactured using CAD/CAM technology was conducted in the PubMed (US national library of medicine) database and Elsevier’s search engine for scientific literature - ScienceDirect. A combination of key words and Mesh terms were used with the Boolean operators: “OR”, “AND” and “NOT”. Language restriction to articles in English and a time filter for researches conducted during the last 5 years were applied.
Results and discussion:
The search yielded 268 results. After a complex study selection protocol, 42 articles relevant to the topic were chosen. The papers were divided by their type – “in vitro” and “in vivo”. The results of the studies were organized in different sections according to their main topic.
Type of publication
Count
In vitro 35
Fracture strength 8
Marginal fit 10
Micro-leakage 5
Bond strength 12
In vivo 7
Prospective; survival 3
Prospective; USPHS criteria 4
Total 42
Purpose:
The aim of the current review of the literature is to organize the current knowledge regarding the cementation of ZrO2 based FPD’s manufactured utilizing the CAD/CAM technology.
Identified articles(n=268)
Removal of duplicates (n=79)
Included for title and abstract analysis(n=189)
Excluded titles (n=65)
Excluded based on specific criteria (n=79)
Included for Full text analysis (n=42)
Conclusion:
The identified articles differ in their methodology and purpose, thereby it is not possible to conduct a meta-analysis of the reported results. In conclusion, there is no universal protocol for luting of CAD/CAM fabricated restorations but a preference towards composite cements is observed, when there isn’t sufficient macro-mechanical retention.