Knowledge, attitude, and practice of teledentistry in periodontal diagnosis: Is it the required upgrade to conventional periodontics?

Background

Teledentistry which is similar to telemedicine has emerged as a new tool for various dental disciplines. Teleperiodontics is a branch of telehealth which focuses on the application of digital communication technology into the field of periodontics without demanding a specialist presence. An early detection and diagnosis of periodontal conditions can not only treat the disease in its early stage but also prolong the health of the periodontium, thereby improving the overall quality of life of an individual. However, teledentistry has not penetrated into the field of periodontics to a level it has to in providing periodontal care. Hence, the aim of this questionnaire study was to assess the knowledge, attitude, and application of teleperiodontics into everyday practice among the dental surgeons at various levels.

Materials and Methods

An electronic questionnaire consisting of 29 close-ended questions including sections assessing the knowledge, attitude, and practice of teledentistry and teleperiodontics was sent to dental colleges present in East and West Godavari districts of Andhra Pradesh.

Results

A total of 350 responses were received and 80.57% dental surgeons were aware about teledentistry, and a total of 74% dental surgeons were likely to prescribe oral hygiene aids and medication for temporary management of periodontal conditions.

Conclusion

Teleperiodontics is an emerging science whose knowledge, attitude, and application are yet to be explored.

Comparison of Non Surgical Periodontal Treatment Outcome and Clinician's Comfort Levels using LM ErgoMax over Hu-Friedy Hand Instruments-A Randomised Clinical Trial

Introduction: Non surgical periodontal therapy by scaling is done by using different sets of hand and motor driven instruments. The best instrument for non surgical periodontal therapy has to be identified, so that, it will benefit the clinicians in point of ergonomics and for patients in terms of less discomfort caused during scaling. Aim: To compare the effectiveness of Linear Monolithic (LM) instruments to Hu-Friedy instruments in non surgical periodontal treatment. Materials and Methods: The split-mouth randomised clinical trial study comprised 50 patients, who were selected from those attending the Department of Periodontics and Implantology, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India, and who were classified with gingivitis or moderate to severe periodontitis according to American Academy of Periodontology (AAP) standards from 1999 and had not undergone any periodontal therapy in the previous six months to one year. The study was conducted from September 2021 to February 2022. Periodontal treatment outcomes were evaluated by plaque index, bleeding index, probing pocket depths, gingival index, and clinical attachment level. Clinicians comfort levels and handling characteristics of two sets of hand instruments (Test: LM instruments to control: Hu-Friedy instruments) were assessed by questionnaire consisting of 10 closed ended questions immediately after the non surgical therapy. The unpaired t-test was used for intergroup analysis and one-way ANOVA was used for intragroup analysis. Results: The mean gingival index scores for test and control sites at baseline were (1.65 and 1.72), at one week were (0.89 and 0.64) and at one month were (0.46 and 0.31). The mean periodontal pocket depth for test and control sites at baseline were (3.93 and 3.79), at one week were (3.40 and 3.25) and at one month were (3.18 and 2.42). A statistically significant difference seen in gingival index (p=0.001), sulcus bleeding index (p<0.001), periodontal probing depths (p<0.001) and clinical attachment level (p<0.001) at one-month interval. Conclusion: The findings demonstrate that LM instruments have higher handling features and cutting efficiency than HuFriedy instruments, althou gh there is no significant difference in plaque index, gingival index, probing depth reduction, sulcus bleeding index, or clinical attachment level.

Improved polymerization and depolymerization kinetics of poly(ethylene terephthalate) by co-polymerization with 2,5-furandicarboxylic acid

Poly(ethylene terephthalate) (PET), known for its clarity, food safety, toughness, and barrier properties, is a preferred polymer for rigid packaging applications. PET is also one of the most recycled polymers worldwide. In light of climate change, significant efforts are underway to improve the carbon footprint of PET by synthesizing it from bio-based feedstocks. Often times, specific applications demand PET to be copolymerized with other monomers. This work focuses on copolymerization of PET with a bio-based co-monomer, 2,5-furandicarboxylic acid (FDCA) to produce the copolyester (PETF). We report the multifunction of FDCA to influence the esterification reaction kinetics and the depolymerization kinetics (via alkaline hydrolysis) of the copolyester PETF. NMR spectroscopy and titrimetric studies revealed that copolymerization of PET with different levels of FDCA improved the esterification reaction kinetics by enhancing the solubility of monomers. During the alkaline hydrolysis, the presence of FDCA units in the backbone almost doubled the PET conversion and monomer yield. Based on these findings, it is demonstrated that the FDCA facilitates the esterification, as well as depolymerization of PET, and potentially enables reduction of reaction temperatures or shortened reaction times to improve the carbon footprint of the PET synthesis and depolymerization process.

Incorporation of the bio-based 2,5-furandicarboxylic acid (FDCA) in poly(ethylene terephthalate) as a copolymer (PETF) improves esterification and depolymerization kinetics due to higher solubility and acidity of FDCA in the reaction media.

A bioimpedance analysis of head-and-neck cancer patients undergoing radiotherapy

Malnutrition is a frequent manifestation in patients with head-and-neck cancer undergoing radiation therapy and a major contributor to morbidity and mortality. Thus, body composition is an important component of an overall evaluation of nutrition in cancer patients. Malnutrition is characterized by weight loss, loss of muscle mass, changes in cell membrane integrity, and alterations in fluid balance. Bioelectrical impedance analysis is a method to analyze body composition and includes parameters such as intracellular water content, extracellular water content, and cell membrane integrity in the form of a phase angle (Φ). Bioelectrical impedance analysis has consistently been shown to have prognostic value with respect to mortality and morbidity in patients undergoing chemotherapy. The goal of the present study was to evaluate the relationship between Φ, time, intracellular water content, and weight for head-and-neck cancer patients undergoing radiotherapy. The results demonstrate that Φ decreases with time and increases with intracellular water content and weight.

Minocycline reduces glioma expansion and invasion by attenuating microglial MT1-MMP expression

Glioma cells release soluble factors, which induce the expression of membrane type 1 matrix metalloprotease (MT1-MMP) in tumor associated microglia and then exploit MT1-MMP mediated matrix degradation for invasion. Here, we show that minocycline blocked the increase in MT1-MMP expression and activity in cultivated microglia stimulated with glioma conditioned medium. Glioma growth within an organotypic brain slice preparation was reduced by minocycline and this reduction depended on the presence of microglia. Glioma growth in an experimental mouse model was strongly reduced by the addition of minocycline to drinking water, compared to untreated controls. Coherently, we observed in our orthotopic glioma implantation model, that MT1-MMP was abundantly expressed in glioma associated microglia in controls, but was strongly attenuated in tumors of minocycline treated animals. Overall, our study indicates that the clinically approved antibiotic minocycline is a promising new candidate for adjuvant therapy against malignant gliomas.