Periapical healing of endodontically treated teeth in one and two visits obturated in the presence or absence of detectable microorganisms

Abstract

Within the limitations of this study, no significant differences in healing of periapical radiolucency was observed between teeth that were treated in one visit (without) and two visits with inclusion of calcium hydroxide for 4 weeks. The presence of a positive bacterial culture (CFU<10(2)) at the time of filling did not influence the outcome of treatment.

Outcome of Single- vs Multiple-visit Endodontic Therapy of Nonvital Teeth: A Meta-analysis

“…Of these, six analyzed periapical repair, [14][15][16][17][18][19] four microbiological control, 17,[20][21][22] and eight postobturation pain. [23][24][25][26][27][28][29][30] Table 1 describes the characteristics of the studies related to periapical repair and microbiological control.…”

“…Except for three studies, 14,16,24 all other had discontinuation rates <10%, an index acceptable. The examiners were blinded in nine studies [14][15][16][17][18]26,28,29 and were calibrated before initiation of the study in four. 15,16,18,33 The clinical protocols differed with respect to the types of professional involved (undergraduate students to experienced endodontists), instrumentation and obturation 20 its use as an intracanal medicament for a short period had a positive effect, probably due to the association with a substance, which removes the smear layer.…”

“…The studies reported times of 15 minutes, 17,21 2 hours, 22 and 24 hours. 20 (3) The type of culture medium must be mentioned -anaerobic and aerobic 17,20,21 or only anaerobic.…”

Single Visit Endodontic in the Management of Symptomatic Irreversible Pulpitis and Pulp Necrosis with Apical Periodontitis: Report of Two Cases

“…Minute differences in periapical healing were observed among individuals undergoing single visit and multiple visit root canal treatment and bacterial growth at the second appointment had a significant negative impact on healing of the periapical lesion [4,5]. In addition to this, the clinical efficacy of sodium hypochlorite irrigation in the control of root canal infection is much more than the effectiveness of interappointment calcium hydroxide dressing, in disinfecting the root canal system and treatment outcome, indicating the need to develop more efficient inter-appointment dressings [6,7]. E. faecalis is the most resistant bacterium against calcium hydroxide while sodium hypochlorite is effective against it in both buffered and unbuffered states [8].…”

“…Single-visit endodontic therapy is defined as 'the conservative non-surgical treatment of an endodontically involved tooth consisting of complete biomechanical cleansing, shaping and obturation of the root canal system during one visit' [6]. With the advent of new instrumentation techniques, material science and technology, it is no more an orthodox empirical procedure for obturation of root canals [7].…”