coverage that conduces to less cuspal
deflection and better protection of the remaining tooth tissue is recommended for the reinforcement of the tooth (15).
Among restored teeth, premolars could be particularly affected by fractures due to anatomical reasons: (1) their crowns are bulkier than anterior teeth (incisors and canines) but they show reduced mesio-distal diameters of the roots: second maxillary premolars, in addition, are usually single-rooted; (2) premolars are characterized by crowns with steep cuspal
inclination and are located midway (between molars and anteriors) along the occlusal arch: in this way, they are subjected to significant lateral forces during functional and parafunctional activities.
Materials with low elasticity modulus deform more under masticatory stresses and do not have sufficient resilience, which may cause catastrophic failure, whereas a high elastic modulus is required to withstand deformation and cuspal
fracture [22, 37].
Kronzon, "Association of mitral annular calcium and of aortic cuspal
calcium with coronary artery disease in older patients,"American Journal of Cardiology, vol.
The correlation of the inclined planes of the articular surface of the glenoid fossa with the cuspal
and palatal slopes of the teeth.
It has been mentioned in the literature that efforts to adjust occlusion after insertion either on chair side or laboratory remounts results in significant loss of cuspal
morphology and appearance of artificial teeth which may lead to reduced masticatory efficiency.27
This supports the idea that the clinical failure of most endodontically treated posterior teeth is not an active caries issue, but rather a mechanical issue where immediate cuspal
coverage is necessary to support teeth that have lost a considerable amount of supporting dentin.
A role for suppressed incisor cuspal
morphogenesis in the evolution of mammalian heterodont dentition.
Tooth development is highly regulated through a series of reciprocal and sequential epithelial-mesenchymal interactions that lead to cuspal
morphogenesis, cell differentiation, and the subsequent formation of the specialized matrices of enamel, dentin, cementum, and bone (Kollar & Mina, 1991; Bleicher et al, 1999; Fincham et al., 1999; Hu et al., 2000).
Krejci, "Marginal and internal adaptation of bulk-filled class I and cuspal
coverage direct resin composite restorations," Operative Dentistry, vol.