Evaluation of Minimum Required Safe Distance between Two Consecutive Dental Chairs for Optimal Asepsis

Cross infection and self-protection, these two words are like a lurid to the health care professionals. A balance has to be maintained among those two words if not, it’s after affects areunpredictable. It is believed that even after following the code of practice, some elements such as the aerosols that are evolved during the use of high speed rotary instruments such as airotor and scaler are difficult to handle. Aerosols containing microbes from oral cavity of the patient are a risky source of infection. The best way to fight against these aerosols is to keep a distance from them. But it is not known how far these airborne microorganisms spread under various clinical environments. This article emphasizes the safe distance that has to bemaintained around each dental chair to prevent cross contamination

Evaluation of influence of bone quality on onset of action and the volume of anesthetic solution required: An original research

Aim: To evaluate the drug volume and onset of action of local anesthetic agent in different bone densities. Methodology: Present study was conducted on 40 subjects (20 male and 20 female) between 25 to 50 years attending to Sibar Institute of Dental Sciences, A 1.8ml 2% lignocaine with adrenalin was injected in the buccal mucosa(1ml) and palatal mucosa (0.8ml) in desired site of evaluation in maxilla. The duration of onset of action in minutes and drug volume used in milliliters was evaluated, where mainly comparison was done between two different densities of bone (D2,D3) according to Misch classification. Results: Areas of maxillary which had a denser cortical bone (D2) needed more volume (1.8-3.6 ml) of local anaesthetic solution (mean ± sd= 2.98 ± 1.02) for achieving its mode of action and subsequently lead to numbness when compared to D3 bone which was more of a porous variety which needed less volume of anaesthetic solution (mean ± sd= 1.63± 0.78) to achieve results. The comparative result was statistically significant (P=0.037). Conclusion: The denser the bone, more time it would take to achieve adequate level of anesthesia

The changing phase of prosthodontics: Nanotechnology

Science is presently undergoing a great evolution, taking humanity to a new era: The era of nanotechnology. Nanotechnology is the field of science and technology pertaining to the creation and use of materials or devices at nanometer scale. Nanoscale is small in size, but its potential is vast. Since 1990s, nanotechnology has been exploited for potential medical and dental applications. Nanotechnology has numerous applications in the field of nanomedicine, nanomaterials, nanorobotics, implantology, and biotechnology. Nanomaterials in dentistry can be metals, ceramics, polymers, implant modifications, and composite materials that demonstrate novel properties when compared with conventional materials due to their nanoscale features. The present article focuses on the various applications of nanotechnology in the field of dentistry, especially prosthodontics

A comparative study to evaluate retention of full metal crowns cemented with various luting agents with and without application of dentine conditioners: An in vitro study

Aim: The aim of the study is to assess the effect of dentin conditioners and luting cements on the retention of full metal crowns. Materials and Methods: Sixty recently extracted caries free molar teeth were prepared using airotor hand piece mounted to a surveyor with a custom made jig, to obtain a standardized 26° total convergence and 4 mm of axial height. Individual crowns were fabricated using base metal alloy. Thus prepared specimens were divided into six groups: 1) Two groups with no dentin conditioning (Control groups A and B), 2) Two groups, dentin conditioned with 10% polyacrylic acid conditioner (First test groups C and D), and 3) Two groups, dentin conditioned with 17% Ethylenediaminetetraacetic acid (EDTA) (Second test groups E and F). Groups A, C, and E were cemented with conventional glass ionomer whereas Groups B, D, and F were cemented with resin-modified glass ionomer. De-cementation was done using universal testing machine at a cross head speed of 1 mm/min after 48 hours of cementation. The obtained results were analysed using One-way analysis of variance (ANOVA) and Post hoc test. Results: The mean retentive (tensile) strength of Group A specimens was 2.26 ± 0.15 MPa, Group B specimens was 2.71 ± 0.15 MPa, Group C specimens was 12.26 ± 0.67 MPa, Group D specimens was 14.28 ± 1.47 MPa. Similarly, Group E specimens was 5.23 ± 0.62 MPa, and Group F specimens was 7.36 ± 0.51 MPa. Conclusion: Within the limitations of the study, retentive (tensile) strength required to dislodge the metal crowns was higher with the combination of resin-modified glass ionomer luting cement and 10% polyacrylic acid dentin conditioner