Fig.1
A 48-year-old female patient presented with chief aesthetic complaints regarding her smile, expressing significant dissatisfaction and self-consciousness. Clinical examination revealed a multi-factorial aesthetic deficit in the maxillary anterior sextant. The patient presented with an unharmonious anterior shape, characterized by triangular teeth and the presence of an interproximal black triangle between the central incisors.
Structurally, the anterior dentition showed generalized incisal edge wear extending from canine to canine, which severely flattened the incisal silhouette. Active facial erosions were present in the cervical third of the enamel. The combination of structural wear, surface erosions, and morphological disharmony created an aged appearance that the patient requested to resolve through a conservative, immediate approach.

Fig.2
To maximize bond strength and ensure precise anatomical control, a strict clinical sequence was followed. Isolation was achieved using a split dam technique, which provided an excellent field of visibility and complete moisture control across the entire maxillary anterior sextant, while allowing unrestricted access to the interproximal spaces and the facial surfaces. First, surface conditioning was performed using air abrasion with 29-micron aluminum oxide particles (AquaCare, Velopex International, London, UK) to effectively remove the aprismatic enamel layer, eliminate surface contaminants, and optimize the micro-roughness of the eroded areas. This was immediately followed by selective phosphoric acid etching of the enamel. Once the substrate was properly treated, washed, and dried, a high-performance bonding agent was applied, preparing the teeth for the subsequent additive composite restoration phase.

Fig.3
Once the substrate was properly treated, washed, and dried, the Unica Anterior matrices (Polydentia, Switzerland) were meticulously positioned on both central incisors and strategically stabilized using a light-cured gingival barrier. This stabilization prevents matrix movement, ensures absolute control over the cervical margins, and facilitates the closure of the black triangles. The adhesive protocol continued with the rigorous application of a universal adhesive, ensuring meticulous penetration and polymerization. To establish proper midline harmony and symmetry, the restorative protocol initiated by restoring both central incisors simultaneously. Filtek Z350 XT (Filtek Supreme XTE, Solventum, , St. Paul, MN, USA) A1 Body Shade composite was meticulously adapted using the snow-plow technique. This specific approach, utilizing a thin layer of uncured flowable composite driven by the packable mass, is crucial for ensuring a void-free, seamless adaptation at the margins, perfectly replicating the emergence profile defined by the Unica matrices. Once the central incisors were cured, the same systematic process was repeated individually, tooth by tooth, on the lateral incisors, and subsequently completed on the canines, ensuring a predictable and harmonic transformation of the entire anterior shape.

Fig.4
Once the direct restorations were fully built across the anterior segment, the finishing phase commenced. The initial step focused on gross excess removal and the establishment of the primary anatomy using flexible abrasive discs (Sof-Lex; Solventum, St. Paul, MN, USA). This critical contouring step was meticulously performed at a low speed without water irrigation. Working dry at this stage is essential, as it allows for uninterrupted visual control over the shaping process, ensuring the proper definition of the incisal edges, transition angle lines, and overall tooth proportions before adding micro-texture. Furthermore, this dry protocol offers a significant clinical advantage: if any surface imperfection or minor void appears during contouring, immediate structural corrections can be performed seamlessly without moisture contamination, ensuring an optimal adhesive surface for immediate repair.

Fig.5
To replicate the natural morphology of the anterior dentition, the StyleItaliano Finishing Burs Kit was employed. The secondary anatomy was carefully designed using the F1 bur, creating the necessary surface textures and developmental depressions on the composite surface. This meticulous step allows the clinician to break the flat profile of the direct veneers, establishing vertical lobes and grooves that break up light reflection just as natural enamel does. By controlling the micro-morphology at this stage, the restoration integrates seamlessly into the smile, ensuring that the single-shade composite displays a highly dynamic and lifelike appearance under optical variation.

Fig.6
To avoid an artificial, overly scratched surface appearance, the F5 bur was subsequently employed. This critical step was designed to delicately soften and blend the structural transitions of the micro-anatomy previously created with the F1 bur, ensuring a lifelike interplay of light and shadow across the direct composite veneers. By gently rounding the sharp geometric peaks, the topography of the composite transforms into an organic, natural morphology. This meticulous refinement ensures that the final polished surface replicates the subtle wear and smooth reflection lines characteristic of healthy human enamel, ultimately maximizing the optical integration of the single-shade restoration.

Fig.7
Once the secondary anatomy has been clearly defined, we initiate the pre-polishing stage. A pink pre-polishing spiral is employed across the entire composite surface, applying light and intermittent pressure. This procedural step is essential to effectively smooth the surface and eliminate any microscopic abrasions remaining from the finishing burs. Given the high flexibility of the spiral, it adapts perfectly to the tooth’s complex morphology. This ensures that the delicate surface texturing and transitional line angles, which we meticulously designed in previous steps, are fully preserved, while simultaneously preparing the substrate for the final high-gloss application.

Fig.8
To achieve an exceptional, enamel-like final polish, the Lucida system (Diashine, Washington, USA) was selected as the material of choice. The submicron, water-soluble diamond paste was applied using the specialized Lucida felt star instrument. Operating under light, intermittent pressure, this system rapidly elevates the composite surface to a mirror-like high gloss within seconds. The primary clinical advantage of this protocol is its capacity to impart a definitive, brilliant luster while completely respecting and preserving the meticulously crafted secondary anatomy and surface texture established in the previous steps. The final outcome is a highly aesthetic direct composite restoration that achieves seamless optical integration with the surrounding natural dentition.

Fig.9
The final clinical photograph, taken two weeks post-operatively, demonstrates complete tooth rehydration and highlights the seamless bio-integration of the direct composite restorations. The material exhibits outstanding optical properties, delivering a natural, lifelike chameleon effect that blends imperceptibly with the surrounding dentition. Most notably, the unesthetic interproximal black triangle has been completely eliminated, establishing correct midline harmony and restoring proper papilla support. Furthermore, the surrounding soft tissues display excellent health and precise adaptation to the newly established contours. This optimal biological response confirms that the emergence profiles were correctly managed using the Unica Anterior matrices (Polydentia, Switzerland), ensuring a highly stable, long-lasting aesthetic and functional result.

Fig.10
A direct comparison between the baseline and the post-operative outcomes highlights the significant impact of this conservative workflow. Utilizing the Unica Anterior matrix system alongside advanced composite stratification allowed for a seamless transition from an unharmonic, aged smile to a highly aesthetic, lifelike result. The initial clinical presentation, characterized by a multi-factorial aesthetic deficit, marked tooth triangularity, and an unesthetic central black triangle, was completely resolved. Furthermore, the generalized incisal edge wear from canine to canine and the active facial erosions in the cervical enamel were fully corrected, successfully realigning the dental axes and restoring proper proximal anatomy. Crucially, this comprehensive morphological and structural transformation was executed within a single clinical appointment. This case demonstrates that a streamlined, “One Shade” workflow can deliver outstanding, highly predictable, and biologically sound outcomes while greatly simplifying everyday clinical procedures.

Fig.11
To guarantee the long-term biomechanical success and structural durability of the additive direct restorations, a strict stabilization protocol was implemented. Following the 2-week post-operative refinement, a precise three dimensional (3D) intraoral scan of the finalized case was performed to capture the new anterior architecture. Based on the digital model, a protective occlusal splint was designed using computer-aided design and computer-aided manufacturing (CAD/CAM) technology and milled from high-density polymethyl methacrylate (PMMA). The appliance was precisely engineered to provide stable centric stops and re-establish proper mutually protected occlusal guidance, thereby safeguarding the composite restorations from the harmful effects of nocturnal bruxism. This digital workflow ensures absolute marginal fit, optimal patient comfort, and a predictable long-term prognosis for the redesigned smile.

Fig.12
The ultimate evaluation of the clinical outcome is demonstrated through a direct extraoral comparison of the patient’s frontal smile. The post-operative portrait reveals a profound transformation in the macro-aesthetics of the smile, transitioning from an unbalanced, aged silhouette to a highly harmonic, youthful appearance. The direct composite restorations successfully restored the proper tooth proportions and aligned the incisal curve with the lower lip line. Most importantly, the elimination of the interproximal black triangle and the seamless integration of the “One Shade” composite provided a natural, bright, and confident smile. This extraoral view confirms that applying a simplified, predictable protocol not only restores individual dental structures but effectively rejuvenates the overall facial harmony of the patient.

Fig.13
The three-quarter smile perspective is widely recognized as the most critical angle for evaluating the three-dimensional integration of an aesthetic restoration. This dynamic view clearly highlights the appropriate volumes and precise emergence profiles achieved through the anatomical guidance of the Unica Anterior matrices, which provide ideal structural support to the upper lip. Furthermore, the natural behavior of light reflecting across the direct veneers validates the texturing protocol. The interplay between the micro-morphology and the high-gloss polish ensures that the single-shade composite behaves like natural enamel, creating a highly attractive and continuous smile arc from every viewing angle.

Conclusions

This case highlights how applying the StyleItaliano philosophy allows the clinician to solve complex anterior challenges predictably and in a single visit. By using the One-Shade technique in combination with the Unica Anterior matrix, the need for complex multi-shade layering protocols is eliminated, while achieving an outstanding chameleon effect and seamless optical blending with the patient’s natural enamel.

True smile rejuvenation relies on restoring macro-harmony, seamless anatomy closure, and correct light reflection lines to achieve a naturally beautiful appearance. To lock in this result over time, completing the case with a digitally designed, CAD/CAM milled PMMA occlusal splint is essential to protect the composite additions from the mechanical stress of bruxism.

Bibliography

1. Layers 2 (Direct Composite Restorations), The Styleitaliano Clinical Secrets. Manauta, Salat, Devoto, Putignano, Quintessence Publishing 2022.
2. Layers, An Atlas of composite resin stratification. Manauta, Salat, Quintessence Publishing 2012.
3. Devoto W, Pansecchi D. Composite restorations in the anterior region: clinical and aesthetic performances. Practical Procedures & Aesthetic Dentistry: PPAD. 2007 Sep 1;19(8):465-70.
4. Devoto W, Saracinelli M, Manauta J. Composite in everyday practice: how to choose the right material and simplify application techniques in the anterior teeth.
5. Krupinsky M. Monoshade composite Bonding. 2023, styleitaliano.org