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This study compared the apical leakage of roots obturated with gutta-percha using either a dual-cure resin based cement (Panavia F) or an epoxy-resin sealer (Thermaseal plus) with or without the application of an acidic primer (ED Primer). Eighty-six single rooted canine teeth were decoronated, cleaned, and shaped by using hand and rotary instruments, randomly divided into four groups, and obturated as follows: group A (n = 20): ED Primer applied followed by thermoplastized obturation with gutta-percha and Thermaseal Plus sealer; group B (n = 20): thermoplastized obturation with gutta-percha and Thermaseal Plus; group C (n = 20): ED primer applied followed by thermoplastized obturation with gutta-percha and Panavia F; group D (n = 20): thermoplastized obturation with gutta-percha and Panavia F. Both a negative control (n = 3; entire root coated with wax) and a positive control (n = 3; obturated with only a fitted master cone) were included in the study. Groups A, B, C, D, and the controls were immersed in molten sticky wax, leaving the apical 2-mm exposed, and quickly chilled. All teeth were immersed in 1% methylene blue dye solution for 10 days, rinsed, and sectioned longitudinally. Apical dye penetration was measured stereomicroscopically at 10-fold magnification. The analysis of variance and Duncan Multiple Range were used for result analysis. The specimens obturated with gutta-percha and an epoxy-resin sealer (with or without an acidic primer) demonstrated significantly less linear dye penetration than specimens obturated with gutta-percha and the dual-cure, resin-based cement (with or without an acidic primer).

Huntington's disease is a lethal autosomal dominant disorder that affects men and women equally. The prevalence of Huntington's disease in North America is 5 to 10 per 100000 people. It is characterized by regular personality changes, dementia, and choreiform (dance-like) movements. Literature concerning dental treatment of patients who have been diagnosed with this type of disease is scarce. Continuous ingestion of medications to control the symptoms of this disease leads to xerostomia, which, maximized by unrestrained movements, often leads to progressive tooth decay, irreversible pulpitis, and tooth loss. Maintenance of teeth in patients with this type of disease is desirable and challenging. Like any patient, a comprehensive treatment plan needs to be developed with equal emphasis on restoration and home care. This case report illustrates how a morphologically difficult endodontic procedure can be successfully administered in a patient diagnosed with HD. Overall case success was attributed to a dental team approach and short-duration appointments to limit patient stress.