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Showing posts from January, 2021

Iris Publishers - Online Journal of Dentistry & Oral Health| Covid 19 Gadgets and Equipments for A Dental Clinic-An Overview and Update

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  Authored by  Hariharan Ramakrishnan, Introduction The novel corona virus is the main cause for the current pandemic worldwide. Infection with this virus leads to severe acute respiratory illness [1]. It is an enveloped single stranded RNA virus, spherical in shape, has a crown like appearance, measures about 60-140nm diameter and belongs to family Coronaviridae [1,2]. Because of its similarity in the morphology, characteristic spread, clinical manifestation and mortality rate with SARS COV and MERS COV corona viruses it was named as SARS COV2 and its associated disease as COVID 19. On January 30th,2020, WHO announced the COVID situation as a Public Health Emergency [1]. Once the infection occurs, the clinical manifestations may include fever, non-productive cough, myalgia, fatigue, diarrheoa, anosmia [2]. Depending upon the age, presence of co-morbidity, the severity of infection may vary from mild fever, cough till organ dysfunction and even death [2]. The path of infection...

Iris Publishers - Online Journal of Dentistry & Oral Health| Extra Oral 3D Scans on the go!

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  Authored by  Gurkeerat Singh, Mini Review Improvement of facial esthetics has long been the primary goal of any orthodontic therapy. The evidence for this can be traced as far back as 1904, when Victor Hugo Jackson [1] provided us with the three primary aims and objectives of orthodontic treatment- Functional efficiency, structural balance and Esthetic harmony. As the understanding of soft tissue limitations [2] of orthodontic treatment with respect to function and stability proceeded, the paradigm shift from hard tissue to soft tissue emerged as one of the most iconic events in the history orthodontic diagnosis and treatment planning [3]. Face centered diagnosis, has therefore gained much popularity in recent years. With the advent of recent 3D technology, it has become possible to better visualize the face in all three planes to have deeper understanding of the demands and needs of every patient. The aim of this paper is to introduce a novel method of extra oral 3D scannin...

Iris Publishers - Online Journal of Dentistry & Oral Health| Possibility of Polymicrobial Synergy and Dysbiosis of Periodonto Pathogens in the Oral Squamous Cell Carcinoma Tumour Microenvironment

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  Authored by  Manosha Lakmali Perera, Opinion At least 15% of oral cancer is suspected to be associated with chronic inflammation. Hence, the role of infection associated inflammation in oral cancer gained much attention [1-3]. Recent past epidemiological evidence, facilitated the emergence of poor oral hygiene as an independent risk factor for oral squamous cell carcinoma (OSCC) [4-6]. Periodontitis is the most devastating outcome of poor oral hygiene [7]. In several epidemiological studies, periodontitis reported to be associated with increased risk of OSCC [8-12]. Periodontitis is an inflammatory disease of the periodontium with polymicrobial aetiology [13]. Interestingly, carcinogenic attributes of two periodontopathogenic bacteria Fusobacterium nucleatum [3] and Porphyromonas gingivalis [3] have been investigated by number of in vivo and in vitro experiments. Promising evidence has been obtained, thus inhibition of apoptosis, activation of uncontrolled cell proliferation...

Iris Publishers - Online Journal of Dentistry & Oral Health| Novel Upgrading of Conventional Glass Ionomer Cement Using Nanohydroxyapatite, Silica and Zirconia

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  Authored by  Wan Zaripah Wan Bakar, Discussion Glass ionomer cement (GIC) or term by the International Organization for Standardization, (ISO), is “glass polyalkenoate cement” [1]. was one of the mostly used material in dentistry since its invention in 1972 by Wilson and Kent. Conventional GIC was an acid-base cements produced from the reaction of weak polymeric acids with powdered glasses [2], composed of water soluble, polyacrylic acid and a fluoroaluminosilicate glass [3,4]. Later, the resin modified GIC (RMGIC) was produced by an incorporation of hydrophilic resin monomer into GIC and set by light curing [5]. Conventional GIC was well liked due to its easy to use [6], moisture less sensitive and the main attractions of GIC are the adhesive properties to enamel and dentin where it bond chemically to hard dental tissues by the formation of ionic bonds between carboxylate gropes and calcium [7], It is anti-cariogenic due to the ability to release fluoride and also act as fl...

Iris Publishers - Online Journal of Dentistry & Oral Health| Prosthodontic Rehabilitation of Missing Dentition Using Multi Unit Precision Attachment Hybrid Overdentures–Clinical Report of Two Patients

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  Authored by  Hariharan Ramakrishnan, Case Report1 A 68-year-old male patient visited the department of Prosthodontics. There is no significant medical, family and psychosocial history. On intraoral examination, there is evidence of terminal dentition in both maxillary and mandibular arches 21, 22, 23 (Maxillary left central and lateral incisors and canines) are healthy in the maxillary arch and 43,44,45 (Mandibular right are healthy in the mandibular arch. Treatment options are explained. Diagnostic impressions are made with alginate (Algitex, DPI, India) and casts (Kalabhai, India) poured in dental stone. Facebow transfer is done (Hanau wide vue, USA) and diagnostic casts are mounted on semi adjustable articulator (Hanau wide vue, USA) using occlusal rims (Baseplate wax, India) sealed in centric relation of jaws and evaluated for all parameters. After all these clinical and radiographic examinations, we have arrived to a treatment plan of restoring with combined prosthesis....