Decision criteria for replacement of fillings: a retrospective study.

The exchange of restorations goes along with the loss of healthy tooth structure. Therefore, it is important to investigate helpful decision criteria for the replacement of fillings. Five hundred forty-four filling replacements were evaluated retrospectively.

Durability of the anti-erosive effect of surfaces sealants under erosive abrasive conditions.

Objective: To test the durability of sealants applied for prevention of erosive dentine mineral loss under erosive/abrasive conditions.

Methods: Forty-eight bovine dentine samples doped with (32)P were randomly allocated to four groups (1-4). All samples performed a de- and remineralizations pre-cycling (6 × 1 min erosion in HCl: pH 3.

Influence of prophylaxis paste treatment on the abrasive wear of surface sealants.

Objective: To investigate the abrasive wear of surface sealants (Seal&Protect and K-0184 (experimental sealant)) and the influence of pre-treatment with mineral deposit forming prophylaxis pastes (NUPRO Sensodyne and NUPRO) on this wear.

Methods: One hundred and eight bovine dentine samples were randomly allocated to nine groups (1-9). Pre-treatment (10 s): groups 1-3: untreated, groups 4-6: NUPRO, groups 7-9: NUPRO Sensodyne.

Influence of extra- and intra-oral application of CPP-ACP and fluoride on re-hardening of eroded enamel.

Objectives: This in-situ study aimed to investigate the potential of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) crème and fluoride mouth rinse to re-harden erosively softened enamel and to evaluate the influence of an intra-oral or extra-oral application.

Methods: Ten volunteers performed five experimental series. Per series, four bovine enamel samples were extra-orally softened by immersion in Sprite light(®) (2 min) and subsequently worn intra-orally for 5 min in intra-oral appliances.

Influence of two different fluoride compounds and an in vitro pellicle on the amount of KOH-soluble fluoride and its retention after toothbrushing.

Objective: To determine the influence of two different fluoride compounds and an in vitro pellicle on KOH-soluble fluoride formation - its retention and resistance to toothbrushing.

Material And Methods: Forty bovine incisors were randomly assigned to four groups (A-D). Of five samples prepared per tooth, one remained untreated and served as a baseline control.