International Journal of Dental Materials

CAD/CAM in Orthodontics – A Magnanimous Journey

V Manisha, Nallakunta Rajesh — Mon, 10 Apr 2023 00:00:00 +0000

Orthodontics is one branch of dentistry which deals with dynamic manipulation and function of the stomatognathic system. Likewise, it has to witness the dynamic changes in its diagnosis method and treatment planning. The field of orthodontics has witnessed many revolutionary techniques and evolved enormously in terms of benefiting the patient. CAD/CAM is one promising methodology that has shown a significant impact in modern dentistry and surpassed some of the challenges an orthodontist has been facing all these years. It has changed the view through which we see the patient’s condition. The application of 3D technology allows the practitioner and patient to utilize virtual treatment planning software to better identify case objectives and visualize treatment outcomes.

CAD/CAM has many applications in orthodontics, which include aids for diagnosis and treatment planning, clear aligner treatment, customized lingual appliances, customized brackets with patient-specific torque, machine-milled indirect bonding jigs, robotically bent archwires, indirect bonding systems, customization of orthodontic appliances like distalization appliance etc., Acceleration of orthodontic treatment (OT) has received growing attention in recent years, especially in adult patients.

Digital workflow is the current trend in orthodontic practice and has speckled every aspect of orthodontics in terms of documentation, study casts, analysis of dental malocclusion, smile designing, treatment planning and fabrication of orthodontic appliances. The current article aimed to establish a narrative description of the digital workflow and applications of the CAD/CAM process in Orthodontics.

Advances in the management of post-endodontic pain: a review

Mon, 10 Apr 2023 00:00:00 +0000

This review describes the management of post-endodontic pain pharmacologically and non-pharmacologically. Acute periapical inflammation brought on by endodontic treatment-related chemical, mechanical, and/or microbiological damage to the periapical region causes postoperative pain, which is multifactorial in nature. A wide range of technical and pharmacological techniques are taken into consideration and proposed to control post-operative endodontic pain, the present study primarily comprised an overview of systematic reviews, randomized clinical trials, and in vitro studies summarizing advancement in the management of post-operative endodontic pain.

An update on Cention N: An aesthetic direct bulk-fill restorative material

Mon, 10 Apr 2023 00:00:00 +0000

The demand for aesthetic restorative materials has increased in recent years. Glass ionomer cements (GIC), their modifications, and various composite restorative materials have been developed as direct tooth-coloured restorative materials. However, none of these materials can be compared to the properties of amalgam restorative materials. Recently, a new direct tooth-coloured, bulk-fill, and aesthetic restorative material, Cention N, was developed. This material is easy to handle and has properties similar to those of type-IX GIC. This article provides an update on the composition and properties of Cention N restorative material.

Cemental tear on the first maxillary premolar in the patient with facial palsy: an uncommon type of root fracture

Mon, 10 Apr 2023 00:00:00 +0000

A 56-year-old female patient came to the department complaining of pain in the upper right back tooth region. The patient reported a history of paralysis in the right half of the body. There is neither swelling nor inflammation in the gingiva. No sinus tract is present in the vestibular area. There were no noticeable caries lesions. Right first maxillary premolar with significant periodontal pocket and grade 2 mobility on palpation. There is tenderness in the percussion. The patient refused treatment alternatives and had the tooth extracted. The middle third of the root contains a completely detached fragment in the middle third. The root fragment was sent for biopsy for histological analysis. Cementum, dentin, and inflammatory cells were found during histological examination and were suggestive of cemental tear.

Evaluation of physico-mechanical properties of dental plaster modified with pulverized acrylic waste

Mon, 10 Apr 2023 00:00:00 +0000

Background: Dental plaster is most widely used to make temporary casts and as an investment medium during the fabrication of removable complete and partial denture prostheses. Dental plasters exhibit poor mechanical properties.

Aim: This study aimed to evaluate the physico-mechanical properties of dental plaster modified with various concentrations of pulverized acrylic waste.

Materials and Methods: A total of 120 specimens were fabricated using dental plaster and were divided into four groups of 30 specimens each to evaluate setting time, one-hour compressive strength, 24-hour compressive strength, and surface reproducibility. Each group was subdivided into five groups of six specimens (n=6), each with the incorporation of various concentrations of pulverized acrylic powder. The specimens incorporated with various concentrations of pulverized acrylic powder (0.5 wt%, 1.0 wt%, 5.0 wt% and 10.0 wt%) were considered as modified groups and the dental plaster with no additives was considered as a control group. The initial and final setting times were measured using a Gillmore needle apparatus, the compressive strength was measured using a universal testing machine, and the surface reproducibility was analyzed using a stereo microscope. The obtained data were subjected to statistical analysis using one-way ANOVA and post hoc analysis.

Results: The incorporation of 0.5 wt% resulted in more final and initial setting times. The one-hour and 24-hour compressive strengths of the dental plaster increased with increasing concentration of acrylic waste. Poor surface details were observed with an increase in the concentration of acrylic waste.

Conclusions: The addition of acrylic waste resulted in an increase in the one-hour and 24-hour compressive strengths, decreased initial and final setting times, and poor surface reproducibility.