www.indiandentalacademy.com
INTRODUCTION      Intracanal medicaments havetraditionally been integral to rootcanal treatment.     Calcium hydroxide i...
AIM      This study was conducted to determine theinfluence   of   the   calcium       hydroxide   intracanalmedication on...
MATERIALS & METHODS     30 extracted human mandibular premolars.Access cavity prepared, a 10 size K-file introduced       ...
Root canals prepared and enlarged using K-files up           to size 40 master apical file.  Proprietary root canal condit...
Teeth randomly divided into two groups           Group I(Experimental Group – 20 teeth) - Calcium hydroxide               ...
Intracanal medication removed after 7 days with  K-files of sizes upto master apical file size with       copious irrigati...
Sub-Group A (10teeth) : All the                    teeth obturated using gutta-percha                   and zinc oxide eug...
DYE LEAKAGE TEST  Access cavities filled with glass-ionomer cement                (Ketac-molar, 3M ESPE) .All specimens, c...
EVALUATION OF APICAL LEAKAGEAll the specimens sectioned horizontally at 1, 2, 3, 4    & 5mm from the root apex with a univ...
Linear measurements of apical leakage recorded with a stereomicroscope (Nikon SMZ – U, Japan, 20X Mag) to         evaluate...
RESULTSNumber of specimens with leakage at each level                                          LEVEL FROM THE APEX        ...
       Specimens in Sub-Group A (Exp.Grp.) showedsignificantly more dye leakage (P<0.001) than Sub-GroupB (Exp. Grp.).   ...
      Specimens in Sub-Group B (Exp.Grp.) showedmore dye leakage at 1,2 & 3mm level than Sub-GroupD (Control Group). But ...
DISCUSSIONCalcium hydroxide medicated root canals obturatedusing zinc oxide eugenol sealers showed more apicalleakage.   ...
 calcium hydroxide remnants, especially at the apical region may adversely affect the long term prognosis of root canal t...
CONCLUSION     Under the condition of this study,calcium hydroxide intra canal medicationincreased apical leakage of root ...
ACKNOWLEDGEMENT       Dr. Arathi G, Professor,    Dr Lakshmi Balaji , Reader,   Dr Mathan Rajan , Sr Lecturer,Dept. of Con...
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effects of calcium hydroxide intra canal dressing on apical seal /certified fixed orthodontic courses by Indian dental academy

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effects of calcium hydroxide intra canal dressing on apical seal /certified fixed orthodontic courses by Indian dental academy

  1. 1. www.indiandentalacademy.com
  2. 2. INTRODUCTION Intracanal medicaments havetraditionally been integral to rootcanal treatment. Calcium hydroxide is highlyrecommended and widely accepted. Complete removal of calciumhydroxide is difficult (Guignes et al1991, Margelos et al 1997, Lambrianidis1999, kim & kim 2002 ). www.indiandentalacademy.co m
  3. 3. AIM This study was conducted to determine theinfluence of the calcium hydroxide intracanalmedication on the apical sealing ability of root canalfillings with zinc oxide - eugenol sealer and AH plussealer. www.indiandentalacademy.co m
  4. 4. MATERIALS & METHODS 30 extracted human mandibular premolars.Access cavity prepared, a 10 size K-file introduced into the canals. Working length determined 1mm short of apical foramen. Coronal 1/3rd flared with size 4-2 gates Glidden drills. www.indiandentalacademy.co m
  5. 5. Root canals prepared and enlarged using K-files up to size 40 master apical file. Proprietary root canal conditioning agent Glyde(Dentsply) and 3% sodium hypochlorite (Vensons India) used and a final rinse with distilled water. Calcium hydroxide paste made by mixing calciumoxide powder (Dental products of India Ltd.,) with distilled water (Powder to Liquid ratio 1:1). Canals dried with paper points . www.indiandentalacademy.co m
  6. 6. Teeth randomly divided into two groups Group I(Experimental Group – 20 teeth) - Calcium hydroxide placed in the canal. Group II(Control Group – 10 teeth) - No medication placed. The access cavities of all teeth in Group I (Exp. Group)sealed with cotton and cavit & stored at 37°C and 100% relative humidity for 7 days. www.indiandentalacademy.co m
  7. 7. Intracanal medication removed after 7 days with K-files of sizes upto master apical file size with copious irrigation with distilled water.After the canals were dried with paper points, teeth from each group subdivided into two subgroups. Then all the canals obturated using cold lateral condensation method. www.indiandentalacademy.co m
  8. 8. Sub-Group A (10teeth) : All the teeth obturated using gutta-percha and zinc oxide eugenol sealer (Dental Group I Products of India Ltd.,)(Exp. Group) Sub-Group B (10teeth) : All the teeth obturated using gutta-percha and AH plus sealer (Dentsply ;Maillefer;USA.) Sub-Group C (5 teeth) : All the teeth obturated using gutta-percha and zinc oxide eugenol sealer (Dental Group II Products of India Ltd.,)(Control Group) Sub-Group D (5 teeth) : All the teeth obturated using gutta-percha and AH plus sealer (Dentsply ;Maillefer;USA.) www.indiandentalacademy.co m
  9. 9. DYE LEAKAGE TEST Access cavities filled with glass-ionomer cement (Ketac-molar, 3M ESPE) .All specimens, coated with nail varnish except 1mm around the apex.Apical 3-mm of each root dipped in India ink (Camelin Ltd., Mumbai) and incubated at 37°C and 100% humidity for 14 days. www.indiandentalacademy.co m
  10. 10. EVALUATION OF APICAL LEAKAGEAll the specimens sectioned horizontally at 1, 2, 3, 4 & 5mm from the root apex with a universal tool milling machine (Deckel, Germany) . www.indiandentalacademy.co m
  11. 11. Linear measurements of apical leakage recorded with a stereomicroscope (Nikon SMZ – U, Japan, 20X Mag) to evaluate the dye penetration depth. The number of specimens with leakage was counted at each section level.Statistical analysis performed using chi-squared test. www.indiandentalacademy.co m
  12. 12. RESULTSNumber of specimens with leakage at each level LEVEL FROM THE APEX GROUPS NO (MM) 1 2 3 4 5 Sub-Group A - (Ca(OH)2 + ZnOE 10 8 6 4 3 1Group I (Exp. Sealer)Group) Sub-Group B - (Ca(OH)2 + AH Plus 10 2 1 1 0 0 Sealer) Sub-Group C - AGroup II 5 3 2 0 0 0 (ZnOE Sealer)(Control Group) Sub-Group D - B (AH 5 1 0 0 0 0 Plus Sealer) www.indiandentalacademy.co m
  13. 13.  Specimens in Sub-Group A (Exp.Grp.) showedsignificantly more dye leakage (P<0.001) than Sub-GroupB (Exp. Grp.). 5MM LEVEL SPECIMEN 5MM LEVEL SPECIMEN FROM GROUP A FROM GROUP B Specimens in Sub-Group A (Exp.Grp.) hadsignificant dye leakage (P<0.001) than the control group. 2MM LEVEL SPECIMEN FROM GROUP A www.indiandentalacademy.co m
  14. 14.  Specimens in Sub-Group B (Exp.Grp.) showedmore dye leakage at 1,2 & 3mm level than Sub-GroupD (Control Group). But not to a statistically significantlevel. 3MM LEVEL SPECIMEN 3MM LEVEL SPECIMEN FROM GROUP B FROM GROUP D In the control group at 1mm and 2mm levelspecimens obturated with zinc oxide eugenol sealershowed more dye leakage than AH plus group. www.indiandentalacademy.co 2MM LEVEL SPECIMEN FROM GROUP C m
  15. 15. DISCUSSIONCalcium hydroxide medicated root canals obturatedusing zinc oxide eugenol sealers showed more apicalleakage.  Calcium hydroxide+eugenol compound = calcium eugenolate.  Interaction between calcium hydroxide and zinc oxide eugenol sealers produce a rapid setting reaction. Calcium hydroxide medicated root canals obturatedusing AH plus sealer showed less leakage than allgroups, except control group: sub-group D (lesssignificant). www.indiandentalacademy.co m
  16. 16.  calcium hydroxide remnants, especially at the apical region may adversely affect the long term prognosis of root canal therapy.Future research has to be done to reduce side effects and optimize the benefits of calcium hydroxide. www.indiandentalacademy.co m
  17. 17. CONCLUSION Under the condition of this study,calcium hydroxide intra canal medicationincreased apical leakage of root canal fillingswith both ZOE and AH Plus Cement Sealers. However, canals obturated with ZOEsealer had more leakage. www.indiandentalacademy.co m
  18. 18. ACKNOWLEDGEMENT Dr. Arathi G, Professor, Dr Lakshmi Balaji , Reader, Dr Mathan Rajan , Sr Lecturer,Dept. of Conservative Dentistry & Endodontics, Sri Ramachandra Dental College, Chennai. www.indiandentalacademy.co m
  19. 19. www.indiandentalacademy.com

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