In vitro salivary pellicles from adults and children have different protective effects against erosion.

Saads Carvalho, Thiago; Baumann, Tommy; Lussi, Adrian (2016). In vitro salivary pellicles from adults and children have different protective effects against erosion. Clinical oral investigations, 20(8), pp. 1973-1979. Springer 10.1007/s00784-015-1703-1

[img] Text
art%3A10.1007%2Fs00784-015-1703-1.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (394kB) | Request a copy

OBJECTIVES We aimed at analyzing the protective effects of salivary pellicles, formed with saliva from adults or children, on enamel from permanent or deciduous teeth. MATERIALS AND METHODS Ninety human enamel specimens (45 permanent premolars and 45 deciduous canines) were ground, and the outer 200 μm of enamel was removed. We divided the teeth into three further subgroups: no salivary pellicle (control), adult salivary pellicle (AP), and child salivary pellicle (CP). We collected stimulated saliva from adults and children and placed 160 μl of either saliva on enamel specimens from AP and CP, respectively. Control specimens received no saliva. Specimens were stored at 37 °C for 2 h and then submitted to an erosive challenge (10 mL; 1 % citric acid; pH 3.6; 25 °C, 1 min). Pellicle formation and erosion was repeated for a total of 4 cycles. After every cycle, relative surface reflection intensity (rSRI) and surface microhardness (rSMH) were calculated. RESULTS On permanent enamel, AP presented significantly better protective effects, with less rSMH loss (p < 0.001) and less rSRI loss (p < 0.001). On deciduous enamel, CP presented significantly better protective effects than AP and control (p < 0.05), for both measured parameters. CONCLUSION We conclude that pellicles from adults and children promote different erosion protective effects, where adult pellicle provides better protection for permanent enamel, and child pellicle promotes better protection on deciduous enamel. CLINICAL RELEVANCE The present results provide a better understanding toward the protective effect of salivary pellicle against dental erosion and brings light to one more factor involved in the erosion of deciduous teeth.

Item Type:

Journal Article (Original Article)


04 Faculty of Medicine > School of Dental Medicine

UniBE Contributor:

Saads Carvalho, Thiago; Baumann, Tommy and Lussi, Adrian


600 Technology > 610 Medicine & health








Tommy Baumann

Date Deposited:

29 Sep 2016 14:55

Last Modified:

12 Jan 2017 15:26

Publisher DOI:


PubMed ID:


Uncontrolled Keywords:

Acquired enamel pellicle; Dental erosion; Permanent teeth; Primary teeth; Saliva




Actions (login required)

Edit item Edit item
Provide Feedback