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QuickHitLit Long Beach VA, Endodontic Section Rahim Karmali DDS, Steven Merchant DDS, Stephen Davis DDS Use drop down menus to sort. Red = Need to know. Blue = Current lit. Author Date Subject Title Take Away Roentgenographic and direct Made experimental lesions in cadavers. Concluded that lesions show up radiographically only if coritcal bone is observation of affected. Also, changes in trabeculation patterns will be discernable only if the junction between the cortex is Seltzer, experimental affected. The radiographic lesion always appears smaller than the actual lesion. This study did not address the Bender 1961 Diagnosis lesions in bone continuity of the PDL and its radiographic appearance of a disrupted lamina dura. A histological and reontgenological study of the Tried to correlate RDX appearance w/ histology. Was very specific about what she termed a normal PA. Her periapical region findings show only 7% of the RCT teeth returned to normal,w/ an additional 20% showing marginal healing. Was she of human upper too discerning and dependent upon RDx too much. The RCT were done in the 40-60s. Obturations were well short, Brynolf 1967 Diagnosis incisors chloroform techniques used. Some of these teeth had severe perio dz. Patterns of vertical root Studied VRF using a computer model based on root shape, canal shape, and dentin thckness. Found a counter- fracture: Factors intuitive pattern of decreasing proximal dentin thickness causing a tendency of increased BL stress concentration. affecting stress Theory is that the thin proximal walls can expand more readily to force, this asymmetrical expansion creates distribution in the additional tensile force on the thicker areas. Of the three variables tested, canal shape had the largest influence, w/ Messer 2003 Diagnosis root canal a reduced radius of curvature strongly influencing stress conc. Finite element analysis and strain-gauge studies of vertical Used a max and a md ant to do the same thing as in the above study. Compared it ti strain-guage techniques. Messer 2003 Diagnosis root fractures Results were basically the same as the above study. Strain-gauge techniques are inaccurate. Evaluated 36 pts with homozygous sickle cell anemia. 6% of teeth w/o any rests or trauma were nec. 83% of the pts Pulpal necrosis had orofacial pain w/o an obvious cause. Radiographic bone density was often shown to be deteriorated and a step with sickle cell ladder pattern was often seen. SCA causes a deformation in RBCs. Macrophages are too busy eliminating them to Unsal 2004 Diagnosis anemia be available to fight off other infections. Deformed RBCs also occlude microvasculature.
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