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PubMed1989

[Pain, flare-ups and failures in root canal therapy].

In this overview the incidences and causes of pain, flare-ups and failures that occur after root canal therapy are discussed. Infection is considered the most important single, underlying determinant of the many factors that may cause pain and failures. Therefore, strict adherence to recognized therapeutic principles of shaping, disinfection and filling, in addition to proper aftercare, is of importance to diminish postoperative sequelae.

Humans↗
PubMedDate not supplied

Two-year outcomes of primary molar ferric sulfate pulpotomy and root canal therapy.

PURPOSE: The objective of this outcome study was to compare ferric sulfate pulpotomy (FS) and primary tooth root canal therapy (RCT) on cariously exposed vital pulps of primary molars. METHODS: A total of 291 molars were treated in 130 children--182 molars received FS and 109 received RCT by random selection. RESULTS: At 2-year reassessment, 116 molars (73 FS, 43 RCT) were available for clinical and radiographic examination. There was no clinical evidence of pathosis in 96% of FS and 98% of RCT molars. Two independent pediatric dentists evaluated periapical radiographs of the treated molars. Molars were classified into 1 of 4 outcomes: (1) N--normal treated molar, (2) H--nonpathologic radiographic change present, (3) P(O)--pathologic change present, follow-up in 6 months, and (4) P(X)--pathologic change present, extract immediately. Survival analysis was applied. A good level of agreement between raters was found for molars with outcome P(X) (kappa=0.745). Intrarater reliability was good for molars with outcome P(X) (kappa=0.710). Significantly greater numbers of FS than RCT molars were rated P(X) at the 2-year recall (chi2=5.8; P=.02). No significant difference in survival between the 2 types of vital pulp treatments was detected in log rank tests (P=.22). CONCLUSIONS: Outcomes for FS were poorer than RCT outcomes at 2 years; however, at 2 years, the survival rates were not statistically different.

Chi-Square Distribution↗
PubMed1996

The status of root canal therapy in Switzerland in 1993.

No data are available on materials or techniques used by Swiss clinicians for root treatments. Two questionnaires were posted to almost all dentists in Switzerland. The first concerned the materials and techniques used while the second detailed the endodontic procedures carried out during 10 consecutive working days. Reply rates for both questionnaires were 62 per cent and 30 per cent, respectively. Major results showed that 50 per cent of the responding clinicians used AH26 to obturate canals, 45 per cent Endomethasone and 36 per cent N2. Canals were disinfected using Ledermix (81 per cent), Asphaline (67 per cent), Ca(OH)2 (60 per cent), and CMCP (22 per cent). Clinicians used H2O2 and NaOCl equally frequently (75 per cent). Hedström files, reamers and flexo-files were used by 52 per cent, 29 per cent and 26 per cent of the clinicians, respectively. Canals were obturated by the single-cone technique (68 per cent), lateral condensation (34 per cent), or by using only a paste or sealer (23 per cent). Too many Swiss clinicians still use formaldehyde-containing products in root canal therapy coupled with a "single cone" or a "no cone" obturation technique. During the 10 day period Swiss dentists began 4 root treatments or retreatments, changed 2 root canal dressings and root filled 5 teeth. They also completed 8 retreatments and 1 definitive pulpotomy every 100 days.

Humans↗