41994_Australasian_Dentist_100_EMAG

CATEGORY LINICAL

Conclusion Take-home message

the stress at the interface with the tooth is optimised and the cavity Con guration Factor (C-factor) is reduced to a minimum. In the case described here, only the marginal ridge was built up on the relatively at cavity of tooth 27 and thus turned into a class I cavity (Figs. 5 and 6). It was followed by the reconstruction of the occlusal surface with an increment each for the palatal and buccal cusp slope (Fig. 7). A primary proximal wall was not previously built up on tooth 26 because of the narrow cavity running in mesiodistal direction. e distopalatal cusp slope and the proximal wall were modelled rst,

starting from the cavity oor (Fig. 8). Here too, the incremental technique was applied to seek the maximum free surface (Denner 2016; Braga et al., 2005; Bichacho 1994). e principle of the incremental technique is independent of the composite used, whereas the use of bulk ll composites allows greater layer thicknesses. e materials used in the case described here are also high-viscosity nano-hybrid bulk- ll composites, which is why larger increments were possible (GrandioSO x-tra, VOCO). In order to reduce the C-factor to a minimum, their application can therefore be particularly meaningful for deep cavities.

Despite relatively small cavities and the use of bulk- ll composites, layering involved several increments. ey have been advisable in terms of low volumetric polymerisation shrinkage as this minimises the stress exerted on the interfaces provided with tight margins. e patient at high risk of caries presented herein will certainly bene t from it. u

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Waterpik ® Water Flosser: 3 times as effective as string floss for orthodontic patients

The Effect of a Dental Water Jet with Orthodontic Tip on Plaque and Bleeding in Adolescent Orthodontic Patients with Fixed Orthodontic Appliances

Sharma NC, Lyle DM, Qaqish JG et al. Am J Orthod Dentofacial Orthop 2008; 133(4): 565-571. Study conducted at BioSci Research Canada, Ltd., Mississauga, Ontario, Canada.

Objective: To compare the use of a manual toothbrush and the Waterpik® Water Flosser with the Orthodontic Tip to manual toothbrushing and ossing with a oss threader on bleeding and plaque bio lm reductions in adolescents with xed orthodontic appliances. A control group consisted of brushing only. Methodology: One hundred ve adolescents with xed orthodontics participated in this single center, randomized study. Bleeding and plaque bio lm scores were collected at baseline and days 14 and 28.

Results: e Waterpik® Water Flosser was over 3 times more e ective than ossing and over 5 times more e ective than brushing alone for the reduction of plaque bio lm. For bleeding, the Water Flosser was 26% better than ossing and 53% better than brushing alone. Conclusion Adding a Waterpik® Water Flosser with the Orthodontic Tip to manual toothbrushing is signi cantly more e ective at improving oral health in adolescent orthodontic patients than adding manual oss or brushing only. u

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Four week data

54 AUSTRALASIAN DENTIST