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      Comparative Evaluation of Obturating Techniques in Primary Teeth: An in vivo Study

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          ABSTRACT

          Aim: The present study was undertaken to compare two methods of obturation in primary teeth by using lentulospirals and pressure syringe, radiographically.

          Materials and methods: Sixty teeth in subjects with mean age of 5.88 ± 1.58 years were obturated randomly using two different obturating techniques, i.e. group I: Thirty teeth obturated with pressure syringe, and group II: Thirty teeth obturated with lentulospiral. Quality of obturation and presence or absence of voids were assessed by taking radiographs after obturation was done using both the techniques. Results of quality of obturation were statistically analyzed using Chi-square test and Mann-Whitney’s test, whereas voids were analyzed using Chi-square test.

          Results: No statistically significant difference between the quality of obturation using pressure syringe or lentulospiral (p > 0.05) was observed. However, significantly higher number of voids were found for lentulospiral technique as compared to pressure syringe (p < 0.01).

          Conclusion: Both the techniques were found to be equally efficient statistically, though lentulospiral produced more voids.

          How to cite this article: Vashista K, Sandhu M, Sachdev V. Comparative Evaluation of Obturating Techniques in Primary Teeth: An in vivo Study. Int J Clin Pediatr Dent 2015;8(3): 176-180.

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          Predicting pulpectomy success and its relationship to exfoliation and succedaneous dentition.

          This study evaluated factors that affected pulpectomy (PE) success and its effect on the succedaneous tooth's eruption and enamel formation. Sixty-five of 250 patients with PEs met the selection criteria and yielded 81 zinc oxide-eugenol PEs (30 incisors, 51 molars) followed a mean time of 90.8 months. Overall PE success was 77.7% with no difference between molars and incisors (P = 0.53). Enamel defects were observed in 18.7% of succedaneous teeth and were related (P = 0.005) to the pre-existing infection causing excess root resorption (>1 mm preoperative root resorption = 44.4% defects) but were not related to overretention of ZOE filler (P = 1) or length of fill (P = 0.36). The PE procedure was not related to causing succedaneous tooth defects since teeth replacing PEs showed no significant increase in the incidence of defects compared with untreated contralateral controls (P = 0.99). There was a 20% incidence of succedaneous tooth anterior cross-bite or palatal eruption following incisor PEs and 21.6% ectopic eruption of premolars following primary molar PEs. Most PEs (95.9%) were lost at their normal exfoliation time or earlier, but 35.8% needed extraction due to overretention by soft tissue at the time of shedding. Pulpectomy success rates showed that the most important preoperative predictor was the amount of primary tooth root resorption. Greater than 1 mm of root resorption resulted in only a 23.1% success rate, which was significant (P = 0.001). Pulpectomies filled short or to the apex had a significantly greater success (P = 0.011) than long fills. Pulpectomies correctly done do not appear to contribute to adverse effects on succedaneous tooth formation but have a 20% chance of altering the path of permanent tooth eruption.
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            A Systematic Review of Root Canal Filling Materials for Deciduous Teeth: Is There an Alternative for Zinc Oxide-Eugenol?

            The aim of this systematic review was to determine whether there is a root canal filling for deciduous teeth equally or more effective than zinc oxide-eugenol cement (ZOE). Six clinical trials selected for inclusion were independently reviewed by two researchers. Only two showed statistically significant different success rates between the test and the control groups. One found that an iodoform paste with calcium hydroxide (IP + Ca) performed better than ZOE, and the other found that ZOE performed similarly to IP + Ca. The other four studies compared ZOE with an iodoform paste (IP), a calcium hydroxide cement (Ca(OH)2), or IP + Ca. In these trials, the success rates in the ZOE groups were slightly lower than in the other groups. There seems to be no convincing evidence to support the superiority of any material over ZOE, and both ZOE and IP + Ca appear to be suitable as root canal fillings for deciduous teeth.
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              Delivery of calcium hydroxide: comparison of four filling techniques.

              This study compared the weight and radiographic appearance of Ca(OH)(2) delivered into standardized, minimally and fully prepared canals using (a) an injection system, (b) an endodontic Flex-O file rotated counter-clockwise, (c) a lentulo spiral, and (d) a .04 rotary NiTi file rotated in reverse. Two extracted human second mandibular premolars with single canals were prepared to an MAF #25 or an MAF #40. A weight measurement and radiograph were made for each filling. Three independent examiners evaluated the radiographs. Regardless of technique, only about 45% of the optimal weight of Ca(OH)(2) was delivered into the minimally prepared canal. Radiographically the filling quality was only 1 to 2 (10 scale). In contrast, all delivery techniques delivered near optimal weight of Ca(OH)(2) in the completely prepared canal with a radiographic filling quality of 8.8 to 9.3. The results indicate that complete instrumentation is needed to obtain near optimal delivery of Ca(OH)(2).
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                Author and article information

                Contributors
                Journal
                Int J Clin Pediatr Dent
                Int J Clin Pediatr Dent
                IJCPD
                International Journal of Clinical Pediatric Dentistry
                Jaypee Brothers Medical Publishers
                0974-7052
                0975-1904
                Sep-Dec 2015
                11 September 2015
                : 8
                : 3
                : 176-180
                Affiliations
                Postgraduate Student, Department of Pedodontics and Preventive Dentistry ITSCDSR, Ghaziabad, Uttar Pradesh, India
                Professor, Department of Pedodontics and Preventive Dentistry ITSCDSR, Ghaziabad, Uttar Pradesh, India
                Professor, Department of Pedodontics and Preventive Dentistry ITSCDSR, Ghaziabad, Uttar Pradesh, India
                Author notes
                Meera Sandhu, Professor, Department of Pedodontics and Preventive Dentistry ITSCDSR, Delhi Meerut Road, Murad Nagar-201206, Ghaziabad, Uttar Pradesh India Phone: 09999553928, e-mail: meerapedo@yahoo.co.in
                Article
                10.5005/jp-journals-10005-1309
                4647036
                26628851
                eba2e660-1cc3-4903-abd3-8c521e8b99b9
                Copyright © 2015; Jaypee Brothers Medical Publishers (P) Ltd.

                This work is licensed under a Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/

                History
                : 21 March 2014
                : 05 April 2014
                Categories
                Research Article

                lentulospirals,obturation,pressure syringe,primary teeth.

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