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Evaluation of presence of voids in two different gutta percha obturation techniques: Thermafil, Soft Core (Low Heat) (an in vitro study) | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 21, Issue 2, 2009, Pages 32-34 | ||
| Authors | ||
| Hussain F. Al- Huwaizi; ad A. Ramadhan | ||
| Abstract | ||
| ABSTRACTBackground: Many attempts to achieve fluid tight seal in root canal obturation were tried since that most of failedendodontic treatment were due to insufficient obturation like presence of voids at gutta percha sealer interface or sealercanal wall and gutta percha canal walls interface. The aim of this study was to evaluate and compare the addaptabilityof guttapercha root canal fillings a cheived with thermafill and soft core( low heat) of two sizes (size of MAF & a one sizeless than MAF) (35 & 40 iso size) for each type of obturator through counting of voids numbers at guttapercha sealerinterface and sealer canal walls and gutta percha canal walls interfaceMaterials and methods: In this study 20 straight distal roots of 8 mm length were sectioned from freshly extracted lowermolar and were prepared using protaper system to f4 master apical file then grouped into 4 groups (5 sample for eachgroup). Group 1: The root canal in this group were luted using dorifill sealer which was applied by paper point to paintcanal wall by thin layer of sealer and then obturated using thermafill obturator (iso size 35) according manufactureinstructions. Group 2: The root canal in this group were luted using dorifill sealer which was applied by paper point topaint canal wall by thin layer of sealer and then obturated using thermafill obturator (iso size 40) according manufacturalinstructions. Group 3: The root canal in this group were luted using dorifill sealer which was applied by paper point topaint canal wall by thin layer of sealer and then obturated using soft core (low heat) obturator(iso size 35) accordingmanufactural instructions. Group 4: The root canal in this group were luted using dorifill sealer which was applied bypaper point to paint canal wall by thin layer of sealer and then obturated using soft core (low heat) obturator(iso size 40)according manufactural instructions. All samples were sectioned at five levels (1mm, 2.5 mm, 4mm, 5.5 mm and 7 mm)from anatomical apex of the root. One hundred samples were examined using transillumination stereoscope at anoriginal magnification of 20 X and photographed by digital camera at special setting as recommended bymanufacturers mounted on microscope. The number of voids of each section was counted.Results: The examination resulted in no voids in all sections of the samples in group 2,group3 and group 4 which wereobturated by iso size 40 of thermafill and iso size 35 & 40 of soft core (low heat) respectively.Two voids were seen in fifth level of sectioning in two samples of group 1 which were obturated by iso size 35 of thermafillobturator.Conclusion: The presence of voids with the use of the thermoplasticized cone techniques is very rare.Key words: Voids, thermafil, soft core. J Bagh Coll Dentistry 2009; 21(2):32-34) | ||
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