Organisms Commons^™

Comparing The Use Of A Manual And A Power Toothbrush By 3-To-4 Year-Old Children, Lorena Delgado Salcedo

Loma Linda University Electronic Theses, Dissertations & Projects

PURPOSE: To compare the ability of three-to four-year-old children in performing toothbrushing with manual versus battery-powered toothbrushes with and without oral hygiene instructions.

METHODS: This study was a randomized, controlled, examiner-blind, 4-period crossover design performed on 50 healthy children, ages 3 to 4 years old. Children were assigned either a manual or power toothbrush at visit one and alternated between the two types of toothbrushes each week, for four weeks. Plaque was scored before and after brushing using the Greene and Vermillion -Simplified Oral Hygiene Index. ^18,19 At their last two visits of the study, the children received brushing instructions …

Ultrasonic Removal Of Bacteria From Plated Cells, Cecilia Chi-Pei Kao

Loma Linda University Electronic Theses, Dissertations & Projects

Children often present with dental trauma to pediatric emergency departments and pediatric dental offices. There is a wide spectrum of types of dental trauma. Although research has been done concerning the treatment of avulsed teeth, the current recommendations in the published guidelines might still be improved for better long term prognoses. One may speculate that ultrasonification of an avulsed tooth prior to replantation may dislodge existing surface bacteria and improve the prognosis for the tooth. This was as an in vitro study to test this concept. Epithelial cells were grown in 6-well tissue culture plates. Standardized amounts of Staphylococcus aureus …

Disinfection Of Dentin By Intracanal Laser Irradiation: An In Vitro Model, Silvia Cristina Mafra Cecchini

Loma Linda University Electronic Theses, Dissertations & Projects

A possible cause for root canal failure is the persistence of bacteria that have colonized dentinal tubules. To reduce this risk and, if possible, to also shorten the time consuming endodontic therapy, new equipment and materials are constantly being introduced. The aim of the present investigation was to study the effect of disinfection of dentinal tubules by intracanal laser irradiation using an in vitro model. The groups irradiated by various lasers were compared with calcium hydroxide, a material frequently used as intracanal medication between appointments. Freshly extracted, intact bovine incisors were used. The root cementum was removed and the teeth …

Effects Of Oral Hygiene Measures On Clinical And Microbiological Parameters Of Periodontal Disease, Bruno Loos

Loma Linda University Electronic Theses, Dissertations & Projects

The effects of a 12-week period of oral hygiene alone on gingival conditions and subgingival microflora in 15 patients with severe periodontitis were investigated. In addition, subgingival microsamples were compared during this oral hygiene phase with those obtained 1 week after debridement. Clinical measurements and subgingival samples from selected sites were taken at week 0 (baseline), week 6, and week 12. Microbial samples were also taken at week 13, that is, one week following debridement. At week 0 the patients were instructed in supragingival plaque control and at week 6 the hygiene regimen was supplemented with the subgingival use of …

Gingival Condition In Areas Of Minimal And Appreciable Widths Of Keratinized Gingiva, Myles C. Miyasato

Loma Linda University Electronic Theses, Dissertations & Projects

This investigation evaluated the gingival condition of areas with minimal (less than or equal to 1.0 millimeter) and appreciable (greater than or equal to 2.0 millimeters) widths of keratinized gingiva.

Sixteen dental, dental hygiene, and dental assisting students and dental faculty who had contralateral or unilateral areas of minimal and appreciable widths of keratinized gingiva on the mid-buccal surface of mandibular bicuspids were examined. Gingival exudate, plaque, gingival inflammation based on color change and/or swelling and bleeding on probing were evaluated. The results showed that all areas examined were plaque free. Three of 32 areas showed clinical gingival inflammation and …