Dentistry Commons^™

The Effect Of Topical Fluorides On The Microleakage Of Sealants, N. Jared Nation

Loma Linda University Electronic Theses, Dissertations & Projects

Purpose: The purpose of this study was to evaluate the possible microleakage found in two groups of sealants; a group bonded with a dentin bonding agent (DBA), and a group bonded without a DBA after exposure to a variety of topical fluorides.

Materials and Methods: Extracted, human molars were placed into 8 groups. Half of the groups contained sealants that were bonded with a DBA and the other remaining groups of sealants were bonded without a DBA. There were two control groups, one that had sealants bonded with a DBA and the other had sealants bonded without a DBA, but …

The Effect Of Naocl, Ca(Oh)2, Mta And Mtad On Root Dentin Fracture Resistance, Sunil Ilapogu

Loma Linda University Electronic Theses, Dissertations & Projects

Various materials are used for the treatment of immature teeth that have been subjected to trauma or decay. It is not well established what effect these materials may have on the immature root dentin. A concern would be the resistance to fracture of the remaining root dentin. The purpose of this study was to compare the resistance of fracture of bovine teeth treated with sodium hypochlorite, calcium hydroxide, gray MTA and gray MTA in conjunction with MTAD after certain periods of time. One hundred and ninety five freshly extracted, intact bovine incisors were prepared using a modified Haapasalo and Orstavik …

Cleaning Ability Of Disinfectants For Dental Steel Burs, Noor Hayaty Abu Kasim Abu Kasim N.H.

Noor Hayaty Abu Kasim Abu Kasim N.H.

Dental burs are a source of bacterial contamination due to its direct contact with carious teeth, saliva and blood. Objective: The aim of this study was to evaluate the disinfecting and cleaning ability of selected commercially available disinfectants on dental burs. Method: Size 5 round stainless steel burs were used to excavate caries from freshly extracted human molars. The burs were then immediately immersed in Grotanat Drill Bath (Shülke & Mayr, Germany), Micro 10 (Unident, Swizerland), Gigasept FF (Shülke & Mayr, Germany), Lysetol AF (Shülke & Mayr, Germany) and 70% Isopropyl alcohol (J.Y. Baker, USA) according to the manufacturer's instructions. …

Bone Formation Using Platelet-Rich Plasma + Allograft: An Experimental Study In Sheep, Edgar Grageda

Loma Linda University Electronic Theses, Dissertations & Projects

Recently Platelet-Rich Plasma has been proven to be an effective regeneration adjunct when combined with autogenous bone in the reconstruction of mandibular defects. However, little is known about the effect of PRP when combined with a bone allograft in the maxillary sinus.

The purpose of this study was to quantitatively evaluate the ability of PRP to enhance bone regeneration in the maxillary sinus of sheep when combined with DFDBA + CCFDBA. Ten sheep were selected for bilateral sinus augmentation DFDBA + CCFDBA + PRP (test) and DFDBA + CCFDBA (control). Five were sacrificed at 3 months and the other five …

The Effects Of Universal And Rotating Ultrasonic Inserts On Wrist Movement, Scaling Time Efficiency, And Cumulative Trauma Risk In Dental Hygienists, Christine Colavita Hawn

Dental Hygiene Theses & Dissertations

The purpose of this study was to determine if differences existed in range of wrist movements and scaling time efficiency in dental hygienists that use a rotating ultrasonic insert as compared to those who use a standard universal insert. A convenience sample of 30 consenting experienced dental hygienists from the Norfolk area who met inclusion criteria was invited to be subjects. Using a crossover research design, each experimental subject used the rotating ultrasonic scaling insert to remove 2 cc artificial calculus from a typodont in a controlled, simulated clinical situation for up to 15 minutes. While scaling, each subject wore …

Dental Students' Perception Towards Effective Clinical Feedback And Assessment, Noor Hayaty Abu Kasim Abu Kasim N.H.

Noor Hayaty Abu Kasim Abu Kasim N.H.

Supervised practice in the dental clinic is one of the teaching tools in preparing a good dental practitioner. Teachers who are efficient in helping students learn in these settings improve this process. The ability to impart good feedback and carry out proper assessment is an important measure of effectiveness. Objective: The purpose of this study was to investigate the perception of students from the Faculty of Dentistry, University of Malaya towards effective clinical feedback and assessment from the staff of the Dept. of Conservative Dentistry. Method: A 4-point Likert-type scale questionnaire was formulated according to Myers, 1977 (J.Dent.Edu 41:68-76). Aspects …