International Journal of Prosthodontics and Restorative Dentistry

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2019 | October-December | Volume 9 | Issue 4

EDITORIAL

Computer-aided Designing and Computer-aided Machining Fabricated Complete Dentures: An Overview

[Year:2019] [Month:October-December] [Volume:9] [Number:4] [Pages:2] [Pages No:105 - 106]

PDF  |  DOI: 10.5005/jp-journals-10019-1253  |  Open Access |  How to cite  | 

EDITORIAL

Facebow is a Valuable Tool in Prosthodontics That Facilitates an Articulator to Closely Simulate Jaw Movements

[Year:2019] [Month:October-December] [Volume:9] [Number:4] [Pages:1] [Pages No:107 - 107]

PDF  |  DOI: 10.5005/jp-journals-10019-1255  |  Open Access |  How to cite  | 

Original Article

Raj Gaurav Singh

Influence of Sandblasted and Acid-etched Commercially Pure Grade II Titanium Surface on Human Osteosarcoma Osteoblast Cell Proliferation and Attachment: A Pilot Study

[Year:2019] [Month:October-December] [Volume:9] [Number:4] [Pages:5] [Pages No:108 - 112]

Keywords: Human osteoblast osteosarcoma cells, Sandblasted and acid-etched, Titanium

PDF  |  DOI: 10.5005/jp-journals-10019-1252  |  Open Access |  How to cite  | 

Abstract

Aim: To evaluate the effect of surface microtopography on osteogenic cell behavior. Materials and methods: Commercially pure grade II titanium discs of similar design and dimensions (2.5 mm × 6 mm) were selected for the study. Samples were sandblasted using 110 μm grit-size alumina (Al2O3), and 15% hydrofluoric acid (HF), 96% sulphuric acid (H2SO4), and 37% hydrochloric acid (HCl) were used for acid etching. Scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX) of samples was performed to observe the surface morphology and elemental analysis. Surface roughness was measured using a surface profilometer. Human osteosarcoma (HOS) cells were seeded at a density of 5 × 103 per test material and control cover slip and incubated for 48 hours. After critical point drying and gold sputtering, a scanning electron microscope was used to observe the cell morphology, proliferation, and cell attachment. Results: Scanning electron microscopy revealed that sandblasting and acid etching resulted in a homogeneous rough surface with a flatter profile. Energy-dispersive X-ray spectroscopy showed a significant increase in the oxygen content (29.38%) after sandblasting and acid etching. Conclusion: Scanning electron microscopy result of the sandblasted and acid-etched surface showed that cell sheets were able to migrate into the pores and adhered inside the valleys suggesting excellent sign of osseointegration.

Original Article

Kanesha Abrol, Samarth K Agarwal, Rachna Maheshwari, Romil Singhal, Swatantra Agarwal

Evaluation of Impact Strength and Surface Hardness of Acrylic Resin Modified with Different Nano Materials: An In Vitro Study

[Year:2019] [Month:October-December] [Volume:9] [Number:4] [Pages:4] [Pages No:113 - 116]

Keywords: Acrylic resin, Impact strength, Nanoparticles, Silicon dioxide, Surface hardness, Zirconium oxide

PDF  |  DOI: 10.5005/jp-journals-10019-1254  |  Open Access |  How to cite  | 

Abstract

Aim: The fracture of the denture resulting from the accidental fall on the ground is affected by the impact strength of the acrylic resin. Many attempts have been made to improve the mechanical properties of acrylic resin by reinforcing it with different materials. The aim of this study was to evaluate the effect of addition of different nano materials on the impact strength and surface hardness of the acrylic resin. Materials and methods: Fifty samples of dimensions 65 mm × 10 mm × 3 mm were made and divided into five groups. Group I is the control group of heat-activated polymethyl methacrylate (PMMA) acrylic resin, while groups II, III, IV, and V are having 1% and 3% zirconium oxide (ZrO2) and silicon dioxide (SiO2) nanoparticles in heat-activated PMMA by weight, respectively. A metallic block was fabricated and invested into addition silicone impression material to form a mold. The modeling wax was melted and flown into the mold cavity to form the wax block. The samples were subsequently polymerized, retrieved, finished, and polished. Impact strength and surface hardness were measured by Izod impact testing machine and Vickers hardness tester, respectively. Results: The results showed that the control group had the highest impact strength and lowest value was observed with 1% SiO2. The value of Vickers hardness was maximum with 1% ZrO2 and least with the control group. The analysis of variance (ANOVA) for both the impact strength and surface hardness indicated a p value of <0.001, which is very highly significant. Conclusion: Incorporation of ZrO2 and SiO2 nanoparticles into the heat-activated PMMA affects the impact strength and surface hardness.

RESEARCH ARTICLE

Roseline Meshramkar, Parkhi Mathur, NB Navya, Mili Gupta, K Lekha

A Study to Evaluate the Role of Macro-, Micro-, and Miniesthetics in an Attractive Smile

[Year:2019] [Month:October-December] [Volume:9] [Number:4] [Pages:7] [Pages No:117 - 123]

Keywords: Attractive smile, Esthetics, Macroesthetics, Microesthetics, Miniesthetics

PDF  |  DOI: 10.5005/jp-journals-10019-1251  |  Open Access |  How to cite  | 

Abstract

Aim: The aim of the study is to evaluate the influence of macro-, micro-, and miniesthetics in an attractive smile. Materials and methods: The smile photographs of around 214 dental students were taken of age group 18–25 years with natural dentition with specific inclusion and exclusion criteria. Frontal photographs were taken with a Nikon DSLR 200 105 mm macro lens ratio 1:1 F/2.8 digital camera. The study was carried out in two stages: stage 1—the photographs were analyzed for beautiful smiles. Those photographs which had a mean score of 60 and above and small standard deviation (3.45) were selected. Out of 214 photographs, 33 photographs were selected for attractive smiles. Stage 2—in the second part of the study different parameters of macro-, micro-, and miniesthetics that influence attractive smile were evaluated. The data obtained were subjected to statistical analysis. Results: Facial form contributes more in an attractive smile compared with the remaining factors for macroesthetics In factors influencing microesthetics ideally tooth shade plays major role compared with other factors. Crowding ideally plays significant role compared with the remaining factors for miniesthetics. Conclusion: In restorative dentistry, all factors are to be included during the treatment to enhance the esthetic appearance of the patient thereby improving the smile.

CASE REPORT

Ruksana Farooqui, Meena A Aras, Vidya Chitre

A Hollow Complete Denture for Severely Resorbed Mandibular Ridges: An Innovative and Simplified Technique

[Year:2019] [Month:October-December] [Volume:9] [Number:4] [Pages:4] [Pages No:124 - 127]

Keywords: Denture retention, Light-weight prosthesis, Residual ridge resorption

PDF  |  DOI: 10.5005/jp-journals-10019-1242  |  Open Access |  How to cite  | 

Abstract

Prosthetic rehabilitation of severely atrophic mandibular ridges poses a challenging clinical situation. The reduction in the basal seat area contributes to reduced retention and stability. Extreme ridge resorption increases the interridge distance, which results in increased height and weight of the prosthesis, thus further compromising its retention and stability and increasing the rate of residual ridge resorption. This can be overcome by making the prosthesis lightweight. This article describes an effective technique of fabricating a hollow mandibular complete denture, thereby reducing the weight of the prosthesis.

CASE REPORT

Nitish K Varshney, Tarun Gaur, Sapna Rani, Sakshi Gupta

Contemporary Approach of Distal Extension Rehabilitation with Precision Attachment and Cast Partial Denture: A Report of Two Cases

[Year:2019] [Month:October-December] [Volume:9] [Number:4] [Pages:6] [Pages No:128 - 133]

Keywords: Cast partial denture, Extracoronal precision attachment, Partial edentulism, Retention

PDF  |  DOI: 10.5005/jp-journals-10019-1247  |  Open Access |  How to cite  | 

Abstract

Satisfactory restoration can be challenging in a patient with a partially edentulous situation especially when unilateral or bilateral posterior segment of teeth is missing. Successful restoration could be done with conventional and contemporary treatment options. Attachment retained cast partial dentures is one such treatment modality. Another treatment modality in such situations is implant supported prosthesis. Extracoronal precision attachment is preferred treatment option where implant therapy does not permit favorable outcome. This paper describes report of two cases in which rehabilitation of distal extension was done with precision attachments followed by cast partial denture.

CASE REPORT

Bhagyashree Kalsekar, Paresh Gandhi, Ajay V Sabane, Seema S Patil

Rehabilitation of Partial Maxillectomy Patient with a Bar and Stud Retained Hollow Bulb Obturator: A Case Report

[Year:2019] [Month:October-December] [Volume:9] [Number:4] [Pages:5] [Pages No:134 - 138]

Keywords: Bar stud attachment, Maxillectomy, Obturator, Retention

PDF  |  DOI: 10.5005/jp-journals-10019-1250  |  Open Access |  How to cite  | 

Abstract

Rehabilitation of the maxillectomy defects is a challenge in terms of retention, stability, mastication, and speech. Conventional clasp designs sometimes fail to provide adequate retention, stability, and support in cases of large defects, and precision attachments are good alternatives. The use of precision attachments in partially dentate maxillectomy patients can significantly improve the functions of speech and mastication, also maintaining Esthetics. The present clinical report describes the interdisciplinary approach in rehabilitation of a partially dentate maxillectomy patient using a precision attachment retained hollow bulb definitive obturator prosthesis.

journal videos

Pre and Post insertion Speech Analysis

Rehabilitation of Partial Maxillectomy Patient with a Bar and Stud Retained Hollow Bulb Obturator: A Case Report

Size: 11 MB

Speech video used for perceptual analysis

Rehabilitation of Partial Maxillectomy Patient with a Bar and Stud Retained Hollow Bulb Obturator: A Case Report

Size: 11 MB

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