cosmetic dentistry - beauty & science

06 I special topic _ minimally invasive cosmetic dentistry Fig. 1_MiCD core principles.1 Fig. 2_Smile Design Wheel. Fig. 3_Andrews’ six keys to occlusion.2 cosmeticdentistry 3_2012 _Abstract Case finishing is one of the important clinical steps in dentistry. Aesthetics, functional forces and oral health are the three fundamental com- ponents that need to be considered during case finishing. Aesthetic components are clinically visible and guided by the subjective analysis (perception) of the patient and the clinician. However, the force components are invisible, and their adverse effects are not easily appreci- ated clinically until the effects become chronic. Moreover, the force components require special tools and clinical techniques to demonstrate Fig. 2 MiCD customised case-finishing concept and clinical protocol Author_Dr Sushil Koirala, Nepal The sooner the better: Follow early diagnosis and intervention approach. Smile Design Wheel approach: Understand psychology, establish health, restore functionandenhanceaesthetics(PHFAsequencesoftheSmileDesignWheel—Fig.2). Do no harm: Minimise the possible biological cost. Evidence-based selection: Select materials,tools,techniques and protocols based on scientific evidence. Keep in touch: Encourage regular follow-up and maintenance. Fig. 1 I. Molar relationship:The distal surface of the distobuccal cusp of the maxillary first molar occludes with the mesial surface of the mesiobuccal cusp of the mandibular second molar. II. Crown angulation (mesiodistal tip):The gingival portion of each crown is distal to the incisal portion and varies with each tooth type. III. Crown inclination (labiolingual,buccolingual): _Anterior teeth (incisors) are at a sufficient angulation to prevent overeruption. _Maxillary posterior teeth: The lingual tip is constant and similar from the canine to second premolar and increased in the molars. _Mandibular posterior teeth:The lingual tip increases progressively from the canines to the molar. IV. No rotations. V. No spaces. VI. Flat occlusal planes. Fig. 3