Dental News Articles

by Zachary R. Conley zconley@email.arizona.edu Introduction: The formation of dental plaque involves a rather ordered pattern of bacterial colonization. As the teeth erupt (or if they are cleaned), surfaces of the enamel are first coated with conditioning film which is characterized by molecules from the host (e.g., saliva) and from the bacteria (e.g., secreted by-products). Early colonizers will grow and change the local conditions to increase its suitability for more discriminating species which colonize later, attaching to previously bound bacteria by adhesion-receptor mechanisms.  Biofilm efficiently produce acid via their metabolism of carbohydrates, leading to demineralization of hard dental tissue. In order to prevent caries, it is essential to set our targets on the formation process of dental biofilms. 1  Anticariogenic compounds that are able to target the mechanisms of biofilm formation are gaining interest in recent history, and provide effective supplements...

Sachin Malagi MDS Lecturer, Dpt of Periodontics COORG Institute of Dental Sciences Rajiv Gandhi University of Health Sciences, India perio2_007@yahoo.com Abstract Traditionally, periodontal diseases have been diagnosed by radiographic and clinical exams, including the assessment of plaque with a plaque index (PI), gingival inflammation with the bleeding on probing index (BOP), probing pocket depth (PPD) and clinical attachment loss (CAL). Nowadays, clinical chairside tests are in use for more precise molecular diagnostics and treatments. This review describes some diagnostic test kits on the market that can facilitate the clinical exams and the establishment of a diagnosis. Keywords: Periodontal disease – gingival inflammation – diagnostic – chairside tests.  Introduction Periodontitis is a prevalent disease of men characterized by loss of connective tissue attachment and bone around the teeth, in conjunction with the formation of periodont...

By Elie Daou* | Paul Boulos** * DDS, MSBM, DESP. Instructor, Dpt of Removable Prosthodontics School of Dentistry, Lebanese University, Beirut, Lebanon. eliedaou@hotmail.com ** DDS, DEA, PhD Director of postgraduate program, Dpt of Removable Prosthodontics Faculty of Dental Medicine, Saint-Joseph University of Beirut paul.boulos@usj.edu.lb Abstract The construction of a removable partial denture in distal extension cases is a delicate procedure since the prosthesis is supported by two different tissues, namely teeth and mucosa. The different resiliency of these supporting tissues may lead to the instability of the prosthesis. This paper describes a functional impression technique that aims to equalize the masticatory load between teeth and edentulous areas thus reducing the instability of the partial denture during function and preserving the residual teeth. Keywords: Distal extension - dental impression - removable partial denture.

By Dr. Derek Mahony info@derekmahony.com www.derekmahony.com It is widely accepted in the dental community that mouthguards reduce injuries in sport, and the most effective mouthguard is that traditionally made indirectly on a model. These mouthguards are made from an impression of the teeth, soft tissues, and fitted predominantly to the upper teeth. The prescription of sports mouthguards, to a person who is undergoing orthodontic treatment, is a difficult situation to apply traditional indirect mouthguard construction methods. Traditionally made mouthguards are expensive to produce, very time consuming to fit in the orthodontic practice, and the materials used for indirect traditional mouthguards cannot be easily refitted, by the Orthodontist, or by the patient.

By Faraj A. Behbehani , Jaber Akbar , Yacoub Altarakemah, Prem Sharma  farajbehbehani@yahoo.com fbehbehani@hsc.edu.kw Abstract: Statement of the Problem : Dental practitioners are faced with many materials and methods commercially available for tooth whitening. This study aims to compare the short term effectiveness and major side effects of 4 popular bleaching systems in a relatively large sample. Materials and Methods: A sample of 300 subjects were divided equally into 4 groups and treated with ( home bleaching - Opalescence 20%, in office – Bright Smile, in office - Zoom, and in office - Zoom plus home bleaching - Day White 9.5%). Results: The four whitening systems were significantly effective at 3 days (T1) and 3 months (T2) after the whitening treatment. At T2, there was no significant difference in whitening effectiveness among the four whitening systems. Tooth sensitivity and gingival irritation were associated with the 4 whitening systems. Conclusion...

By Dr. Ines kallel ineskallel@yahoo.fr   Introduction   Dental erosion was defined as dissolution of tooth by a solution that is low in pH either after the consumption of extrinsic acidic fluids or when gastric fluids come into the oral cavity. Gastro esophageal reflux (GERD) is a condition defined as an involuntary passage of gastric juice against the normal flow of digestive tract. It can be abnormal phenomena on in newborns and usually disappears with age; however, in some individuals, its maintenance can be considered a pathological condition. (1) The association between acid reflux and dental erosion was first described by Howden in 1971 and was confirmed in other studies later, both in the adult population and in children. (2, 9, 23) This association is commonly observed by dentists, but is given very cursory mention or omitted entirely when describing extra esophageal (supra-esophageal) manifestations of GERD. (3) A recent systematic review fo...