Conservative Treatment to Improve Function and Esthetics

The patient in this case report expressed concerns about the thinning and wearing down of her anterior teeth as well as erosive lesions on the cervical necks, which had previously been bonded with composites (Figure 1 through Figure 4). Her desire was to prevent the occurrence of further wear while enhancing her smile through restorative dentistry. Because she had an edge-to-edge bite, retroclined maxillary teeth, and collapsed buccal corridors, addressing this case without orthodontics would necessitate opening the vertical dimension, which would lead to the treatment of more teeth and involve preparation designs to wrap porcelain over occlusal surfaces and functioning cusps, resulting in further reduction of tooth structure.

The patient agreed to undergo pre-restorative orthodontics with clear aligner therapy to establish the correct functional position and allow for veneers with virtually no preparation. The orthodontic plan took the desired thickness of the restorative material into consideration, ensuring an additive approach (Figure 5 and Figure 6). After uprighting the teeth and managing their spacing in accordance with the intended smile design, the patient underwent a 3-month retention period, during which time records were acquired, a smile wax-up was completed (Figure 7), and she whitened her teeth.

Although restoration primarily focuses on white esthetics, or those of the teeth, it is crucial to consider pink esthetics and address the gingiva and the lips framing the smile. The patient in this case had generally pleasing gingival heights; however, slight crown lengthening was required for the premolars, and the gingival scallops of the maxillary anterior teeth were opened to alleviate the narrowness of their cervical necks (Figure 8 and Figure 9). The soft tissue alteration was performed on the same day, and the bone alteration was completed after placement of the provisional restorations (Figure 10 through Figure 14).

Following an evaluation of the patient's tissue health and approval of the smile design, records were sent to the laboratory for the fabrication of the final porcelain veneers. In the laboratory, the case was mounted on an articulator (Panadent). A bleach-shaded lithium disilicate ingot (GC Initial^® LiSi MT, GC America) was selected for pressing. Pressed restorations were only facially cut back to maintain core strength all the way to the incisal areas. After a wash bake, porcelain (GC Initial LiSi, GC America) was layered in shades CT-21, EOP-2, EOP Booster, TM-01, TM-03, E57, CLF, and EI-12. After contouring, the restorations were stained and glazed at a slightly lower temperature than what is recommended, and hand polished. The final restorations, which were seated two at a time under rubber dam isolation, met the patient's expectations and improved her function while respectfully conserving her tooth structure (Figure 15 through Figure 20).

The author would like to thank Myung Joo Shin, designer at Synergy Ceramics in McKinney, Texas, for performing the laboratory work for this case.

Amanda Seay, DDS
Fellow
American Academy of Cosmetic Dentistry

Clinical Instructor
Kois Center

Private Practice
Charleston, South Carolina