Conclusion Costs for repeated treatment of post-orthodontic enamel damages produced by conventional vestibular fixed appliances may easily exceed the initially higher costs associated with lingual orthodontic treatment .
Judged economically in the long term , lingual MB Tx may be considered as a more cost-effective solution for a correction of malocclusion
Background Post-orthodontic white-spot lesions ( WSL ) in esthetically relevant incisor and canine areas impair dentofacial esthetics , and preventive dentistry treatment is definitely required in case of enamel cavitations .
The incidence of lingual post-orthodontic WSL and cavitation following lingual MB treatment has been reported to be distinctively decreased compared to labial MB treatment .
Moreover , lingual WSL do not impair dentofacial esthetics .
It was the objective of this study to calculate consequential costs of preventive dental care necessary to recover labial or lingual post-orthodontic cavitations as well as esthetically relevant WSL following either labial or lingual MB interventions .
Colour improvement and stability of white spot lesions following infiltration, micro-abrasion, or fluoride treatments in vitro.
SUMMARY BACKGROUND / OBJECTIVES White spot lesions ( WSLs ) are unwelcome side effects of fixed appliances that compromise the treatment outcome . Recently , infiltration of WSLs has been introduced as a viable treatment alternative . The objective was to evaluate the colour improvement of WSLs and their stability against discolouration following infiltration , fluoride , or micro-abrasion treatments in vitro . MATERIAL S/ METHODS Artificial WSLs were created in bovine enamel ( N = 96 ) using acidic buffer solution ( pH 5 , 10 days ) and were r and omly allocated to four groups . Specimens were treated with infiltration ( Icon , DMG ) , fluoride ( Elmex Caries Protection , GABA ) , and micro-abrasion ( Opalustre , Ultradent ) or remained untreated ( control ) . Groups were discoloured for 24 hours in tea or tea + citric acid . Colour components and visible colour change ( L * , a * , b * , ΔE ) were measured spectrophotometrically on following time points : baseline , after WSL formation , after treatment , and during discolouration ( 8 , 16 , and 24 hours ) . Data were analysed using Kruskal-Wallis and Mann-Whitney tests . RESULTS WSL formation increased ( L * ) in all groups . Only infiltration reduced this effect to baseline . Highest ΔE improvement was obtained by infiltration and micro-abrasion followed by fluoride . This improvement was stable only for infiltration during discolouration . L * , a * , and b * changed significantly during discolouration in all groups except infiltration . Within the same treatment group , discolouration solutions did not differ significantly . LIMITATIONS In vitro testing can not replicate the actual mode of colour improvement or stability but can be used for ranking material s and techniques . CONCLUSIONS / IMPLICATION S Infiltration and micro-abrasion treatments were capable of diminishing the whitish appearance of WSLs . Only infiltrated WSLs were stable following discolouration challenge
Conclusion Costs for repeated treatment of post-orthodontic enamel damages produced by conventional vestibular fixed appliances may easily exceed the initially higher costs associated with lingual orthodontic treatment .
Judged economically in the long term , lingual MB Tx may be considered as a more cost-effective solution for a correction of malocclusion
Background Post-orthodontic white-spot lesions ( WSL ) in esthetically relevant incisor and canine areas impair dentofacial esthetics , and preventive dentistry treatment is definitely required in case of enamel cavitations .
The incidence of lingual post-orthodontic WSL and cavitation following lingual MB treatment has been reported to be distinctively decreased compared to labial MB treatment .
Moreover , lingual WSL do not impair dentofacial esthetics .
It was the objective of this study to calculate consequential costs of preventive dental care necessary to recover labial or lingual post-orthodontic cavitations as well as esthetically relevant WSL following either labial or lingual MB interventions .