Pre-eruptive coronal resorption of permanent teeth: report of three cases and their treatments.
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Adolescent↗
Biomedical subjects
E Eidelman
Publications and source records attributed to E Eidelman.
Intentional sealing of occlusal dentin caries: a controversial issue.
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Dental Caries↗
Clinical evaluation of Class II combined amalgam-composite restorations in primary molars after 6 to 30 months.
Composites are claimed to be inappropriate for Class II restoration due to polymerization shrinkage. The present study evaluated the clinical and radiographic appearance of Class II combined amalgam composite restorations in primary molars. Conventional cavities (groups A & B) were restored with 1mm thick amalgam at the cervical floor covered by a posterior composite (Estilux Posterior). In group A Amalgambond was placed between the layers: in group B conventional enamel bond was applied. Vertical increments of Estilux Posterior over enamel bond restored cavities of group C. A fluted carbide bur and Sof-lex discs finished all restorations. Criteria developed by Cvar & Ryge (1971) were used for clinical evaluation of 39 restorations (12, 16 and 11 of Groups A, B and C respectively). No complaints of pain or discomfort were reported during the 6-30 months (mean 15.3) follow-up period. All groups presented excellent surface appearance. Ninety-two percent of group A and 100 percent of groups B & C presented excellent marginal adaptation. Anatomic form was excellent in 92 percent, 8 percent and 100 percent of groups A, B and C respectively. The underlying amalgam was visible through the composite of groups A & B reducing the percentage of excellent ratings of color match to 33 percent and 38 percent respectively, with 9 percent in Group C. This difference was significant (P < 0.02). Secondary caries was observed in two teeth (group A & C). Radiographs presented radiolucent area at the amalgam-composite interface only in one restoration (group A) and one at the tooth-composite interface (group C). Bubbles were found in 6.6 percent of group A; 12.5 percent of group and 64 percent of group C (p < 0.01). This study detected differences between the groups only in color match and the presence of bubbles.
Child↗
Ferric sulfate versus dilute formocresol in pulpotomized primary molars: long-term follow up.
The aim of this study was to compare the effect of ferric sulfate (FS) to that of dilute formocresol (DFC) as pulp dressing agents in pulpotomized primary molars. Ninety-six primary molars in 72 children were treated by a conventional pulpotomy technique. Fifty-eight teeth were treated by a FS solution for 15 sec, rinsed, and covered by zinc oxide-eugenol paste (ZOE). In another 38 teeth, a cotton pellet moistened with 20% DFC was placed for 5 min, removed, and the pulp stumps were covered by ZOE paste. The teeth of both groups were sealed by a second layer of intermediate restorative material (IRM) and restored with a stainless steel crown. This is a report of the clinical and radiographic examination of 55 teeth dressed with FS and 37 teeth fixed with DFC, that have been treated 6 to 34 months previously (mean 20.5 months). Four teeth were excluded from the study due to failure of the patient to present for recall. Success rates of 92.7% for the FS, and of 83.8% for the DFC were not significantly different. Four teeth (7.2%) of the FS group and two (5.4%) of the DFC group presented internal resorption. Inter-radicular radiolucencies were observed in two teeth of the FS group and three teeth of the DFC group. The latter also presented periapical lesions. Success rates of both groups were similar to those of previous studies utilizing the traditional Buckley's formocresol.
Bandages↗
Pulp response to ferric sulfate, diluted formocresol and IRM in pulpotomized primary baboon teeth.
This study investigated the pulp response to a 15.5 percent ferric sulfate solution (FS) and a 20 percent dilution of formocresol (DFC) in pulpotomized primary teeth of baboons, after four and eight weeks. Pulpotomies were performed in seventy-nine primary teeth of 4 baboons. After coronal pulp resection, the pulp stumps were painted with ferric sulfate for fifteen seconds, in thirty-two teeth (group 1); in another thirty-two teeth, a cotton pellet moistened with dilution of formocresol was placed over the pulp stumps for five minutes, and removed (group 2). In fifteen teeth, IRM was placed directly over the pulp stumps after hemostasis (group 3--control). The teeth of all groups were sealed with IRM, and examined for inflammatory changes under a microscope by two blinded examiners. Seventy-seven teeth were assessed. Mild or no inflammation was found in 58 percent (18/31) of the teeth of group 1, in 48 percent (15/31) of those of group 2, and in 73 percent (11/15) of those of group 3. Severe inflammation was found in 35 percent (11/31) of group 1, 29 percent (9/31) of group 2, and in 7 percent (1/15) of group 3. No statistically significant difference between the three groups was observed for degree of inflammation, periradicular or interradicular abscess or inflammatory root resorption (chi-square p > 0.05). Dentin bridges were observed in 52 percent (16/31) of the teeth in group 1, 52 percent (16/31) of those of group 2, and in 73 percent (11/15) of those of group 3. No difference was found between the experimental and control groups for the presence of dentin bridge, (p > 0.05). Ferric sulfate produced pulp responses that compared favorably to those of diluted formocresol.
Animals↗
Treatment trends during a thirteen-year period in a student pediatric dentistry clinic.
This manuscript reports the treatment trends in a pediatric dentistry clinic from 1980 to 1992 and discusses their implication in clinical teaching. Analysis of the records of the senior year pediatric dentistry students indicated: no significant change with time in the patients/student ratio, the number of preformed crowns, pulpotomies, and pulpectomies by student or by patient; a significant decrease in the number of one-surface and > or = 2-surface restorations by student and by patient; a significant increase in the number of pit-and-fissure sealants and preventive resin restorations by student and by patient. During the thirteen-year period, the students performed an average of 7.3 one-surface; 12.9 > or = 2-surface restorations; 5.5 preformed crowns; 6.4 pit-and-fissure sealants; 2.4 pulpotomies. There was a significant increase with time in the number of students who performed pit-and-fissure sealants.
Child↗
The effect of internal bevel on marginal leakage at the approximal surface of Class 2 composite restorations.
The aim of this study was to assess the effect of intentionally leaving undermined enamel (internal bevel) along the cervical margins of class 2 composites on marginal leakage. Conventional MO and DO cavity preparations were prepared in 25 extracted permanent premolars. In each tooth the cervical margin was a butt-joint for the control group and an internal bevel for the experimental group. A transparent celluloid matrix was adapted and the teeth were restored with scotchbond Multi-Purpose and increments of Z100. A U-shaped increment was attached to the buccal and lingual walls and cervical floor of the box, leaving a gap for a middle increment. A third increment filled the occlusal part of the cavity. Following thermocycling the teeth were immersed in basic fuchsin for 24 hours, and 0.5 mm-wide sections were cut in a mesiodistal direction. Dye penetration was scored: 0 = no penetration; 1 = dye along enamel tooth interface; 2 = dye along the gingival floor; 3 = dye along pulpal wall; 4 = dye penetration into dentinal tubules. The experimental group showed 17 teeth (68%) with no dye penetration, compared to eight (32%) in the control group. Severe dye penetration (score 4) was found in only four teeth (16%) of the experimental group and 12 (48%) of the controls. The difference between the groups was statistically significant (Wilcoxon matched-pairs signed-rank test; P < 0.01). This study showed that an internal bevel at the cervical margins of class 2 composite restorations reduces marginal leakage when compared to a conventional butt-joint cavity preparation.
Composite Resins↗