Day :
Keynote Forum
Arup Ratan Choudhury
BIRDEM Hospital, Bangladesh
Keynote: A Healthy Mouth For Healthy Life
Biography:
Abstract:
The human mouth is home to millions of microorganisms, most of them harmless. Under certain conditions, however, some can cause oral infections such as tooth decay or gum disease. Oral bacteria may also enter the bloodstream if normal protective barriers in the mouth are breached. This can happen as a result of dental treatment or even tooth brushing and flossing. Recent studies point to associations between oral infections, primarily gum infections and diabetes; heart disease; stroke; and preterm, low-weight births. Research is underway to determine if the associations are causal or coincidental. Gum infections have been called "the sixth complication of diabetes," because people with diabetes are more likely to have periodontal disease. Researchers are exploring a possible two-way connection between the conditions to see if treating gum disease improves diabetic control. Recent studies point to an increased risk of heart disease and stroke in people with gum infections; the risk increases with the severity of the oral infection by integrating oral health into strategies for promoting general health and by assessing oral needs in sociodental ways, health planners can greatly enhance both general and oral health. The key concept underlying future oral health strategies is integration with this approach, a major benefit being the focus on improving health conditions in general for the whole population and for groups at high risk, thereby reducing social inequities.
Keynote Forum
Samir A Koheil
Alexandria University, Egypt
Keynote: Diagnosis of early carious lesions using laser diode near-infrared transillumination (in-vitro study)
Time : 09:45-10:45
Biography:
Abstract:
Introduction: The resin cement is recommended to cement the implant fixed prosthesis. Efforts to remove the excess cement protruding after seating restoration, an entrapment of residual cement in the peri-implant tissues can be detected.
Objective: The aim of this study was to detect the retained excess resin cement around tissue level and bone level dental implants following two different cementation techniques.
Materials & Methods: Fourteen tissue level implants (group A) and fourteen bone level implants (group B), (OCO Biomedical, Inc. Albuquerque, USA) were screwed in a drilled models (Salvin Dental Specialties, Inc. Charlotte, USA) having a rubber surface covering, simulating the gingiva. Twenty-eight metal copings were fabricated and were cemented to the implant’s abutments by RelyX U200 dual-cure resin cement. Each group was further sub-divided according to the cementation technique into two subgroups (n=7): sub-group A1, B1: Tack cure of the excess cement for three seconds and the excess partially set resin cement was carefully removed before complete cure. And subgroup A2, B2: 1mm occlusal vent was performed on the occlusal surface of the metal copings. Excess cement from the vent and the margins were carefully removed followed by a full cure. The rubber coverage on the models was removed and any retained cement was collected and the net weight was determined. All specimens were visually examined from all sides under 30X magnification using Stereomicroscope (SZ-11, Olympus, Japan).
Results: The tissue level implant following the tack cure protocol had less retained excess cement percentage than the occlusal vent protocol. Statistically, the comparison showed a significant difference in the retained excess cement percentage within the tissue level subgroups (p=0.018), no statistically significant difference was observed within the bone level sub-groups techniques (p=0.096). There was the statistically significant difference between non-vented tack cure and occlusal vent techniques regardless of the implant type (P=0.004), with more retained excess cement percentage with the vent technique. No statistically significant difference between tissue level and bone level implants regardless of the cementation technique, with more, retained excess cement percentage in the bone level implants. Our result also showed a complete seat of the prosthetic core on the abutments with 1 mm vent hole that sealed the margins properly. Again stereomicroscope showed seepage of the cement around the micro thread at the bone level implants.
Conclusions: Tack curing of excess resin cement during the cementation of implant-supported restorations might reduce the cement residue, but still couldn’t remove the problems of excess resin cement around dental implants. Implants inserted at the bone level might need extra precautions to avoid the problem of retained excess cement that may affect implant.