Browsing by Subject "Dental Pulp Capping"

Now showing 1 - 5 of 5
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    A clinical and television densitometric evaluation of the indirect pulp capping technique
    (1964) Bernard Charles Kerkhove, Jr., 1935-; McDonald, Ralph E.
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    A critical clinical and television radiographic evaluation of indirect pulp capping
    (1967) Traubman, Lionel; Bixler, David; Shafer, William G.; Phillips, Ralph W.
    The purpose of this study was to quantitatively measure the rate and amount of calcification and secondary dentin deposition below deep carious lesions of otherwise radiographically and clinically sound teeth treated by calcium hydroxide - methyl cellulose indirect pulp capping. Standardized, reproducible serial radiographs of 50 treated young posterior teeth were exposed preoperatively at one, three, six, nine and, in some cases, 12 months. At the final appointment, the silver amalgam restorations were removed and all residual caries was excavated. A barium sulphate radiographic indicator paste identified the pulpal floor level at the first and last appointments. Ninety per cent of the teeth studied remained asymptomatic and were not pulpally exposed. Television density and linear measurement instrumentation was utilized to register calcification changes, pulpal floor thicknesses, and secondary dentin deposition. Following treatment, increased secondary dentin deposition and Calcification activity, or sclerosis, was initiated. Higher levels of calcification activity were related to increased thickness of pulpal floors, but this dimension had little influence on the total amount of reparative dentin formed. The rate of reparative dentin formation was highest during the first month and steadily diminished with time. Calcification activity experienced a cyclical change, or "exchange," with an initial activity peak. This was followed by an apparent, but temporary mobilization of mineral content •out of the affected dentin. With time, a steady rise in calcification level was observed. Measurement of longitudinal records showed that apparent pulp exposures can be avoided by allowing significant amounts of protective secondary dentin to form, before complete caries excavation.
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    Evaluation of a new pulp capping agent: a clinical investigation
    (1979) Nirschl, Ronald Francis; Poland, Charles, III; Koerber, Leonard G.; Barton, Paul; Starkey, Paul E.
    This study compared clinical results of two calcium hydroxide bases used in indirect pulp therapy on human teeth. Thirty-four teeth with deep carious lesions were treated with indirect pulp therapy. Eighteen teeth were treated with commercially available Improved Dycal and 16 teeth were treated with an experimental calcium hydroxide formula. Evaluation was made at intervals of three and six months. After three months, periapical and bitewing radiographs were made and the teeth were examined clinically for signs of pulpal degeneration. At the six-month evaluation, in addition to the radiographic and clinical examinations, cavities were re-entered and the unsound residual dentin was removed to ascertain the presence of a so1id dentinal base. Removal of all unsound residual dentin without an exposure of the pulp, as well as the clinical and radiographic examinations, were used to determine clinically successful treatment. In the experimental group 15 teeth were successfully treated; a success rate of 94.4 percent. Seventeen teeth in the control group demonstrated successful indirect pulp therapy; a success rate of 93.75 percent.
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    Pulp reaction to anorganic bovine dentin
    (1967) Walshe, Martin J.; Norman, Richard Daviess, 1927-; Shafer, William G.; Gish, Charles W., 1923-
    A study was made to determine if heterogenous dentin, devoid of its antigenic potential, would stimulate reparative dentino-genesis in the dental pulp. The teeth of two monkeys were capped with bovine dentin mixed with methyl cellulose and histologic analysis was made at 21 and 42 days post-operatively. At the 21-day interval, seven of the 17 teeth capped with the experimental material were successfully repaired with atubular dentin. The remaining 10 teeth showed varying degrees of inflammation and repair. The teeth of the second animal (42 days) were stained for bacteria as an additional diagnostic tool. A direct correlation was found between delayed healing and inflammation and presence of bacteria in the pulp. No bacteria were found in pulps which were successfully repaired. It was concluded that anorganic bovine dentin seemed to induce calcific repair of the dental pulp in the absence of bacteria. Autogenous dentin chips appeared to have the same effect. The importance of including a bacteriologic stain in the histologic analysis of pulp capping studies was demonstrated.
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    Pulp vitality of primary molars with deep caries treated with ART restorations: 2-year RCT
    (Pediatric Dentistry, 2022) da Silva, Gabriela Seabra; Raggio, Daniela Prócida; Mello-Moura, Anna Carolina Volpi; Gimenez, Thais; Montagner, Anelise Fernandes; Floriano, Isabela; Lara, Juan Sebastian; Calvo, Ana Flávia Bissoto; Pascareli-Carlos, Aline Maquiné; Tedesco, Tamara Kerber; Cariology, Operative Dentistry and Dental Public Health, School of Dentistry
    The aim of this study was to compare the pulp vitality of primary teeth with deep caries treated with two restorative techniques. The restoration survival rate was also evaluated as a secondary outcome. Children aged from 4 to 8 years with at least one deep carious lesion in molars were selected at the Ibirapuera University dental clinic. One hundred and eight deciduous molars were allocated into two groups: (1) restoration with calcium hydroxide cement lining followed by filling with high-viscosity glass ionomer cement (CHC+HVGIC) or (2) restoration with HVGIC. Pulp vitality and restoration survival were evaluated at 6, 12, and 24 months. Intent-to-treat analysis was used for pulp vitality, and survival analysis was performed with the Kaplan-Meier method (α=5%). Results: At 24 months, 86 restorations were evaluated, and 91 were evaluated at least once during the study. There was no significant difference between the restorative treatments regarding pulp vitality (CHC +HVGIC=70% and HVGIC=68.5%) (OR=1.091; CI95%=0.481-2.475). However, HVGIC (73%) restorations showed a higher survival rate than CHC+HVGIC (50%) (p=0.021). Thus, it can conclude that deep caries in primary molars should be restored with HVGIC, since the technique results in similar pulp vitality to the CHC +HVGIC, but with a higher restoration survival rate.