The aim of this study was to find out the anthro- pometric correlation of vertical dimension of occlusion (VDO) with the length of ear, nose, and little finger in dentate male and female subjects in Karad population, so as to use this correlation to determine VDO in edentulous patients.

The study was conducted in Krishna Institute of Medical Sciences Deemed University, Karad, India, on 320 dentate subjects (160 males and 160 females) who fulfilled the inclusion criteria. Anthropometric measurements of VDO, length of ear, length of nose, and length of little finger were recorded using a digital vernier caliper. Simple linear regression model was used to develop a prediction formula for VDO using length of ear, nose, and little finger as the independent variable. Correlation between VDO and length of ear, nose, and little finger was studied using Pearson's correlation test.

Statistical analysis in male and female subjects showed that VDO is significantly different with the length of nose, ear, and little finger. Pearson correlation test showed VDO in males has strong coefficient correlation with the length of the ear (r = 0.500), and strong coefficient correlation with the length of the nose (r = 0.335) in females.

The regression analysis was conducted to formu- late the regression equation for determination of VDO in male and female subjects. The study revealed that the length of ear in males [VDO = 25.591 + 0.565 (length of ear)] and the length of nose in females [VDO = 36.933 + 0.353 (length of nose)] are strongly correlated with VDO.

The regression formulae were formulated for male and female subjects in dentate patients which can be used to determine the VDO in edentulous patients.

Rege JJ, Gosavi SS, Gosavi SY, Tewary S, Kore A. Evaluation of the Correlation between the Vertical Dimension of Occlusion and the Length of the Ear, Nose, and Little Finger: An Anthropometric Study. Int J Prosthodont Restor Dent 2017;7(1):1-7.

In spite of many advances in the field of prosthetic dentistry, the choice of whether to treat and retain a grossly compromised tooth or to extract and replace with an implant is debatable. Alveolar bone preservation is one of the main criteria to select the treatment option. This is directly affected by the stress generated in the cortical bone under variable loads and is therefore, relevant.

Two three-dimensional finite element models were generated in relation to maxillary second premolar using ANSYS software. Model-I was parallel-tapered titanium implant with screw-retained titanium abutment and porcelain fused to metal (PFM) crown. Model-P was fiber post and com- posite resin core with PFM crown. Luting cement was resin cement. Both the models were surrounded by homogeneous and isotropic cortical and cancellous bone, and were subjected to variable loads of 300, 400, and 500 N in axial (0°) and nonaxial (15°, 45°) directions.

Stress in the cortical bone in megapascal (MPa) in Model-I/Model-P when subjected to variable loads in newtons(N) in axial direction was 300 N - 37.6 MPa/47.3 MPa; 400 N - 50.2 MPa/63.0 MPa; 500 N - 62.7 MPa/63.0 MPa. 15°- 300 N - 68.5 MPa/65.9 MPa; 400 N - 91.3 MPa/87.9 MPa; 500 N - 114.2 MPa/87.9 MPa. 45° - 300 N - 136.3 MPa/88.9 MPa; 400 N - 181.8 MPa/118.5 MPa; 500 N - 227.2 MPa/118.5 MPa.

Within the limitation of this study, it was concluded that on axial loading, both the treatment modalities showed no significant difference, but on nonaxial loading, the cortical bone in the implant model showed to have considerably higher stress than post core-treated tooth model. Hence, given a choice, this study favors retaining and restoring a compromised tooth with post core and crown rather than extracting and replacing with an implant.

Rao S, Arora H, Hameed S. A Three- dimensional Finite Element Analysis of Stress Distribution in the Cortical Bone in Single Tooth Implant and Post Core-treated Tooth subjected to variable Loads. Int J Prosthodont Restor Dent 2017;7(1):8-16.

To compare the effect of QMix, a mixture of tetracycline, citric acid, and detergent (MTAD), and ethylenediaminetetracetic acid (EDTA) on the microhardness of the root canal dentin.

A total of 30 single-rooted teeth were decoronated at 15 mm from the root apex. Root canal instrumen- tation using step back technique was done and the specimens were split into two halves using diamond disc. These were embedded in acrylic blocks and sent for testing by Vickers hard- ness test. The other half of the specimens was divided into four groups. Control group: In this, normal saline was used. Group I: MTAD was used. Group II: 17% EDTA was used. Group IV: QMix 2 in 1 (DENTSPLY) was used. The specimens were immersed in test irrigant for 5 minutes in closed glass plates. The tested specimens were sent for Vickers hardness test under 100 gm load for 15 seconds. The post Vickers hardness number readings were recorded and sent for statistical analysis.

Data were analyzed using one-way analysis of variance and least significant difference post hoc test was applied for pairwise comparison. QMix showed significantly less reduction in microhardness than EDTA and QMix: Normal saline > QMix>EDTA>MTAD.

QMix as a root canal irrigant is efficient as it caused least reduction of microhardness of dentin. It has antibacterial properties and is also efficient for smear layer removal.

Gupta C, Singh G, Singh MP, Agarwal M, Singh KS, Mishra A. Effect of QMix 2 in 1, BioPure MTAD and 17% Ethylenediaminetetraacetic Acid on Microhardness of Root Canal Dentin: An in vitro Study. Int J Prosthodont Restor Dent 2017;7(1):17-20.

Prathap DK. Age Determination in Foren- sic Odontology. Int J Prosthodont Restor Dent 2017;7(1):21-24.

Ramkumar K, Sabarigirinathan C, Vinayagavel K, Gunasekar C, Dhanaraj M. Implants for Auricular Prosthesis. Int J Prosthodont Restor Dent 2017;7(1):25-29.

Qureshi R, Agarwal M, Singh MP, Singh SK, Sharma K. Endodontic Management of a Rare Ana- tomic Variation of Radix Entomolaris in Mandibular First and Second Molar using Cone-beam Computed Tomography as a Diagnostic Aid. Int J Prosthodont Restor Dent 2017;7(1):30-33.

Wadhwani S, Singh MP, Agarwal M, Singh SK. Endodontic Management of Pathologic Root Resorption using EndoSeal Mineral Trioxide Aggregate. Int J Prosthodont Restor Dent 2017;7(1):34-37.

Closed hollow obturators are often fabricated to provide adequate retention, stability and comfort for the patient.

Rehabilitation of patient with maxillary obturator is the most common treatment option after maxillectomy. However, the heavy weight of obturator often leads to discomfort and problem in its retention.

This article presents rehabilitation of a patient after the surgical removal of desmoplastic ameloblastoma. It employs a simple procedure to create a closed hollow obturator with uniform and adequate thickness of prosthesis wall.

The technique offers advantage since it is easily fabricated with routinely used materials in a short time.

Parab MM, Aras MA, Chitre V. Technique of Fabrication of Definitive Hollow Obturator for Partial Maxillectomy Patient. Int J Prosthodont Restor Dent 2017;7(1):38-41.