Endokorona – alternatywna metoda odbudowy zębów trzonowych leczonych endodontycznie ze znaczną destrukcją korony
In a recent study, Zoidis et al. proposed polyetheretherketone (PEEK) as an alternative framework material for endocrown restorations. They demonstrated that the elastic modulus of the polyetheretherketone framework (4 GPa) veneered with indirect composite resin could dampen the occlusal forces protecting tooth structures better than ceramic materials. But further long-term clinical evidence is required [31].
Recent scientific researches have focused on the positive results achieved during the last 12 years of endocrown restorations made with CEREC 3 and Vita Mark II feldspathic ceramic in a CAD-CAM system, with an estimated success of 90.5% for molars and 75% for premolars in 55 patients [1, 32].
According to Belleflamme et al., even in the presence of extensive coronal tissue loss or occlusal risk factors, such as bruxism or unfavorable occlusal relationships, endocrowns could be a reliable approach to restore severely damaged molars and premolars [33].
Conclusion
The preparation for endocrowns is simple and can be achieved quickly. Root canals are not engaged in the process, and the procedure is less traumatic than others. The supragingival position of the cervical margin protects the marginal periodontium, facilitates impression taking, and preserves the solid substance of the remaining tooth. Forces are dispersed over the cervical butt joint (compression) and axial walls (shear force), thus moderating the load on the pulpal floor.
The [...]
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