Aim and Objectives:The aim of this study is to evaluate and compare the fracture resistance of root canals obturated with four different obturating systems in endodontically treated teeth.Materials and Methods:One hundred and twenty single-rooted teeth were selected and decoronated at cementoenamel junction. Instrumentation of teeth (except control group) was done with Mtwo rotary files up to size 25/0.06 using a step-back technique. All teeth were divided into four experimental groups (n = 25) and two control groups (n = 10). In Group I (negative control), teeth were neither instrumented nor obturated, in Group II (positive control), instrumentation was done, but no obturation was performed, in Group III, obturation was done with cold lateral compaction technique, in Group IV, obturation was done with cold free-flow compaction technique, in Group V, obturation was done with warm vertical compaction technique, and in Group VI, obturation was done with injection-molded thermoplasticized technique. All prepared teeth were embedded in an acrylic resin block, and their fracture strength was measured using Universal Testing Machine. Statistical data were analyzed using one-way analysis of variance and Tukey's honestly significant difference test.Results:Negative control Group I showed highest fracture resistance and positive control Group II had lowest fracture resistance. Among experimental groups, cold free-flow compaction technique with GuttaFlow2 (Group IV) showed higher fracture resistance as compared to the Group III, Group V, and Group VI.Conclusion:GuttaFlow2 has the potential to strengthen the endodontically treated roots to a level that is similar to that of intact teeth.

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This article describes the presence of foreign bodies which are asymptomatic in nature in the orofacial soft tissue spaces. The patient had reported to the Department of Conservative Dentistry and Endodontics with sensitivity as the chief complain in the lower right back tooth region. Clinical Examination were suggestive of generalised attrition in relation to #46. Radiographic findings revealed a well defined radioopacity in relation to distal root of #46. This radiolucency was seen to have moved to the mesial root when another radiograph of the same tooth was taken. An orthopantomograph and CBCT was then taken to study the case better which apparently showed around 12 such radio-opacities lodged in the oral cavity with the patient being absolutely asymptomatic of it. The provisional diagnosis of foreign bodies embedded in the soft tissue was considered.

Aim:  This  Case  Report  describes  two  rare  cases  of  clinical  management of  maxillary  first  molars  with  six  root  canals  with  special  reference  to  radiographic  interpretation  and  diagnosis. Background:  The  study  reports  2 clinical  cases  of  endodontic  treatment  of maxillary  first  molars    with    six    root  canals.    Case Description: The  access  cavity  was  prepared  using  a  slow  speed  round  bur.  The  teeth  were    diagnosed    with  irreversible    pulpitis  and    then  anesthetized  for  an  endodontic  access  cavity    preparation.  Clinical  evaluation  of  the  internal  anatomy  revealed  3  principle  root  canal  systems:  mesiobuccal  (MB),  distobuccal  (DB),  and  palatal  in  each  tooth. The  working  length  was  determined  and  the radiographs  were  taken  for  all  the  roots  i.e  mesiobuccal,  distobuccal  and  palatal  separately  after  placing  instruments  in  each.  The  cleaning  and  shaping  was  performed  using  ProTaper  Universal  rotary  instruments.  Irrigation  between  each  instrument  was  done.  The  canals  were  dried  and  obturation  was  performed  using  cold lateral  compaction  of  gutta-percha  and  a  resin-based  sealer.  The  teeth  were  then  restored  with  a  posterior  composite  restoration.  The  patients  were  advised  a  full-coverage  crown.   Conclusion:  A  good  knowledge  of  tooth  morphology,  careful  interpretation  of  angled  radiographs,  proper  access  cavity  preparation  and  a  detailed  exploration  of  the  interior  of  the  tooth  is  needed  to  ensure  a  proper  endodontic  treatment. Clinical Significance:  Prevalence of teeth with such  complex  internal  anatomy is a rare anomaly. However, a sound knowledge of the internal anatomy can aid in its adequate management.   Keywords:  maxillary  molar,  six  canals,  altered anatomy

The knowledge of root canal system of different human teeth is a "road map" for the successful root canal treatment. Mandibular canine usually contains one root with a single root canal, but rarely it may possess two canals and even less frequently two roots and two or three canals. Two-rooted mandibular canine is a rare phenomenon. Literature report shows incidence of two-rooted canine as low as 1.7%. This article highlights the identification and endodontic management of two cases of a rare anatomical variation in mandibular canine with two roots and two canals.