Publications by authors named "Minal Sanjay Kumthekar"

3 Publications

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Comparative evaluation of frictional resistance of extracoronal attachments of different designs and lengths in fixed partial denture: A finite element analysis.

J Indian Prosthodont Soc 2021 Jan-Mar;21(1):99-105

Department of Prosthodontics and Crown and Bridge, School of Dental Sciences, KIMS-DU, Karad, Maharashtra, India.

Aim: The purpose of the study was to evaluate the frictional resistance and the vertical force required to achieve the frictional resistance for different length and designs of extracoronal attachments used in fixed partial denture (FPD).

Setting And Design: Finite element analysis.

Materials And Methods: Four different designs and five different lengths (3 mm, 3.5 mm, 4 mm, 4.5 mm, and 5 mm) of extracoronal attachments for FPD were selected from different manufacturers. Three-dimensional models of all the samples were simulated using Catia V5 software. The properties were incorporated to the software to simulate the clinical conditions. The frictional resistance and the vertical force required to achieve frictional resistance were analyzed using ANSYS workbench 15.0 finite element software.

Statistical Analysis Used: ANOVA and Tukey's post hoc test.

Results: The mean microhardness of the Variolink N resin cements were significantly higher than Panavia SA ones (P < 0.001). Variolink N cements exhibited lower sorption/solubility than Panavia SA resin cements (P < 0.05). The ceramic shade had a significant influence on the microhardness of both cements (P < 0.001) but had no significant effect on the sorption/solubility of resin cements (P > 0.05).

Conclusion: Interposition of monolithic zirconia decreases the microhardness of resin cement especially Panavia SA. The microhardness decreased in Variolink N with the increase in the chroma saturation of ceramics. However, in Panavia SA, it was altered by the shades. For both cements, there were no statistical differences between the sorption/solubility. There was a reverse correlation between microhardness and water sorption/solubility of both cements.
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http://dx.doi.org/10.4103/jips.jips_463_19DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8061438PMC
January 2022

Evaluation of the effect of ultraviolet light polymerized clear adhesive on shear and tensile bond strength of heat cure denture base resin to the cobalt-chromium retentive minor connector: An study.

J Indian Prosthodont Soc 2020 Oct-Dec;20(4):394-401. Epub 2020 Oct 8.

Department of Prosthodontics and Crown and Bridge, School of Dental Sciences, KIMS-DU, Karad, Maharashtra, India.

Aim: The aim of this study is to evaluate the efficacy of new material ultraviolet (UV) light polymerized clear adhesive on shear and tensile bond strength of heat cure denture base resin (Polymethylmethacrylate (PMMA)) to cobalt-chromium (Co-Cr) retentive minor connector.

Setting And Design: Comparative evaluation- In-vitro study.

Materials And Methods: Sixty samples of Co-Cr plates mimicking minor connectors were fabricated. Thirty samples were coated with new material UV light polymerized clear adhesive and cured under UV light source for 10 min. In gun-metal flask, metal plates were placed in the lower compartment over it. Heat cure acrylic resin was packed in the dough stage with the help of clamps and processed according to the manufacturer's instructions. Samples were kept in artificial saliva for 90 days. Shear and tensile bond strengths were calculated of each sample with a Universal testing machine, and results were statistically analyzed. Type of bond failure was observed for each sample under stereomicroscope.

Statistical Analysis Used: Unpaired t test.

Results: Tensile bond strength, as well as shear bond strength, showed that 0.93 N and 1.64 N respectively for without application of new adhesive was more as compared to that of samples with the application of new adhesive which is 0.75 N and 1.54 N respectively. Bond failure was found to be an adhesive failure in resin-metal interface.

Conclusions: Excellent bonding seen between the new adhesive and acrylic interface but limited effect on the metal interface. To increase bond strength between metal and resin interface, some surface treatment with the metal surface is needed to increase the bonding of the new adhesive to the metal surface.
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http://dx.doi.org/10.4103/jips.jips_85_20DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7814690PMC
October 2020

Anchored guided rehabilitation.

J Indian Prosthodont Soc 2020 Jul-Sep;20(3):321-325. Epub 2020 Jul 17.

Department of Prosthodontics and Crown and Bridge, School of Dental Sciences, KIMS-DU, Karad, Maharashtra, India.

The loss of mandibular continuity leads to difficulty in swallowing, problems in mastication, altered mandibular movement, impaired speech articulation, and cosmetic disfigurement. Rehabilitation of such patients becomes more challenging in the case of complete edentulous maxillary and mandibular arches due to a lack of support and anchorage. This case report describes prosthetic rehabilitation of completely edentulous arches with segmental mandibulectomy. Hence, the anchorage was provided with the help of osseointegrated implants in both the maxillary and mandibular arches. Deviation of the mandible toward the unresected side during mastication and other functions was corrected using a palatal ramp. An attempt was made for prosthetic rehabilitation of mandibulectomy defect which required a multidisciplinary approach and which fulfilled the patient's requirement of mastication.
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http://dx.doi.org/10.4103/jips.jips_311_19DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7654201PMC
July 2020