Canal Access, Instrumentation, Irrigation-Access

Summary:  Purpose: to determine whether apical enlargement affected the healing outcome in patients undergoing root canal treatment. •N= 4 articles. •Materials/Methods: •A PICO strategy was developed to identify previously published studies dealing with apical size of canal and microbial reduction. •Inclusion criteria: In vivo human studies articles from 1950 to 2014 which reported clinical and […]

Summary:  •Purpose: to determine whether apical enlargement of canals affected microbial reduction in patients undergoing root canal treatment. •N= 7 articles. •Materials/Methods: •A PICO strategy was developed to identify previously published studies dealing with apical size of canal and microbial reduction. •Inclusion criteria: üIn vivo human investigations from 1950 to 2014 which reported microbial reduction. […]

Summary:   Purpose: To evaluate the effect of different apical preparation sizes on the outcome of primary root canal treatment in mandibular first molars. Materials/Methods:  •n:  129 patients evaluating only Mandibular 1st  molars with prespecified criteria •1 operator performing the primary RCT using stepback tech with SS handfiles .02 •Divided to 5 experimental groups with a […]

Summary:   Purpose: To evaluate the influence of apical size on cleaning of the apical third of curved canals prepared with rotary instruments. Materials/Methods:  •n:  44 Maxillary molars (mesiobuccal root) with specified criteria •Divided to 4 experimental groups n: 10  (GP 1: 30,.02; GP2: 35,.02; GP3: 40,.02; GP4: 45,.02); rotary system (Hero 642) •1 endodontist (same […]

Summary:  Purpose: To assess the influence of multiple clinical uses on the torsional behavior of ProTaper Universal rotary NiTi instruments N= 10 sets of instruments ProTaper Universal instruments S1, S2, F1 and F2 Materials/Methods: •Ten sets of instruments were used by an experienced endodontist, each set being used in five molar teeth. •After clinical use […]

Purpose:  to evaluate the use of an ultrasonic technique combined with the creation of a “staging platform by modified Gates glidden to remove fractured rotary nickel-titanium instruments from narrow, curved canals. N=  60 simulated canals and 30 mesiolingual canals from extracted mandibular molars. Inclusion criteria: teeth showing two separate mesial canals and completely developed root […]

Summary:  Purpose: To investigate the incidence and aetiology of file fracture as well as analysing recommended prevention protocols. Additionally, the effectiveness of alloy modifications in reducing the incidence of file fracture was considered. Most highlighted Results:  -The bulk of the literature relating to instrument fracture is in vitro evidence, which limits its clinical relevance. -The […]

Purpose: to illustrate 3 clinical cases in which removal of fractured instruments was attempted by adaptation of the ultrasonic technique described by Ruddle. Clinical significance: •An ultrasonic technique using CPR tips combined with the creation of a “staging platform” using Gates Glidden instruments and the use of the dental operating microscope was consistently successful at […]

Summary:  Purpose: to evaluate the separation incidence of reused ProTaper Universal rotary instruments and identify the relevant factors. N= 6,154 canals /2,654 teeth Materials/Methods: •First, glide path created with #10, then SX , WL:#15, THEN  all files starting from S1 to F3 were used. •Instruments used maximum # were collected and analyzed, fractured instruments examined […]

Summary:  Purpose: to investigate the incidence of hand and rotary instrument separation in an endodontic graduate program between 2000 to 2004 and to determine if any co mon denominators exist – to identify variables that affect instrument separation. Materials and Methods: •N = 4865 cases (2828 Molars, 1014 premolars, 1023 anteriors) •Data recorded included: tooth […]