Effect of root canal contents on healing of teeth with dentin-bonded resin composite retrograde seal

Molar apicectomy with amalgam root-end filling: results of a prospective study in two district general hospitals

“…Such studies have inferred furthermore that lack of good RCT compromises (or is likely to compromise) the outcome. 54,58,59 We were able to confirm this latter conclusion in the case of 20 teeth where RCT was absent throughout the study period and where in all instances periradicular rarefaction supervened, involving the periapex alone in the majority (Table 10).…”

Microsurgical endodontic retreatment of a maxillary molar with a separated file: a case report

“…This issue is largely unaddressed in the literature, though Rud et al reported healing at two-to four-year follow-up of 551 infected roots apically sealed with a dentine bonding agent utilizing an operating microscope with complete bone healing occurring in 92% of cases where the root filling extended to the apex and 81% healing when the root was untreated and contained necrotic pulp remnants. 19 Considering a dentine bonding technique was utilized in these cases, this would seem to suggest that healing can occur if the apical zone can be reliably sealed. The major cause of failure in the empty canal was either a 'loose' or incomplete dentine-bond apical coverage of the root and if the presence of an accessory canal was also noted.…”

“…The major cause of failure in the empty canal was either a 'loose' or incomplete dentine-bond apical coverage of the root and if the presence of an accessory canal was also noted. 19 Indeed, the efficacy of the apical seal has been reported as the most important factor in the prognostic outcome for apical surgery. 20 An advantage of the microsurgical technique utilizing ultrasonics is that the size of the osteotomy can be reduced to just 3 to 4 mm in diameter.…”

Apical capping as a new technique for retrograde treatment of an infected root apex: Introduction and first results

“…Using ultrasonic preparation, it is possible to remove nearly all necrotic tissue from the central root canal (Rud et al, 1997). Furthermore, the use of special filling materials has resulted in secure occlusion of the preparated cavity (Torabinejad and Pitt Ford, 1996).…”

“…There is still a risk of tooth loss, even when the best possible treatment is used including ultrasonic preparation under the microscope and filling with new sealers. The main reason for relapse is the omission or incomplete treatment of main and side canals (Rud et al, 1997). These side canals cannot be treated effectively with conventional treatment.…”