Dentist
Can Altuğ Kaya
Practicing aesthetic dentistry, laser-assisted dentistry and implant-supported prostheses in Alsancak, İzmir. Founding dentist of Dentorion Oral and Dental Health Polyclinic.
- Born
- 1962 · Zara
- Graduated
- 1984 · Ege University
Porcelain laminate veneers are thin porcelain shells bonded onto the tooth after removing 0.3–0.7 mm of its surface. Prepared very thinly in the desired shade and shape, porcelain laminate veneers contain no metal. Resistant to fracture, porcelain laminates allow light to pass into the tooth.
Today, laminate veneer restorations are preferred as a conservative option for patients with discolored, fractured, malformed or mildly misaligned teeth.
İçindekiler
- Indications for Porcelain Laminates
- Key Aesthetic and Functional Factors in Porcelain Laminate Treatment
- Zenith Points
- Shape and Position of the Teeth
- Color
- Symmetry
- Midline
- Smile Line
- Gum Health
- Advantages of Porcelain Laminate Veneers
- Disadvantages of Porcelain Laminate Veneers
- Contraindications for Porcelain Laminate Veneers
- Dentist Can Altuğ Kaya
Indications for Porcelain Laminates
- Tooth discoloration due to various causes
- Closing diastemas (gaps) between the front teeth
- Tooth alignment problems
- Crown lengthening of short teeth
- Various types of enamel hypoplasia and malformations
- Unhealthy and unaesthetic restorations on the labial surfaces of the teeth
- Eroded teeth that still have enough enamel for retention
- Agenesis of the lateral incisors: the crown form of the canine can be modified with porcelain laminates to mimic the lateral tooth.
- Indicated in teeth with large pulps, where restoring the teeth with crowns would be difficult without causing irreversible damage.
Key Aesthetic and Functional Factors in Porcelain Laminate Treatment
Zenith Points
Zenith points define the highest levels of the crown contour. Their position becomes especially important when closing diastemas or correcting teeth that are tipped distally or mesially.
Shape and Position of the Teeth
In many people, the shape of the teeth matches the morphology of the face. If the tooth surface is flat, it reflects more light and therefore looks wider and larger. The opposite is true for teeth with rounded contours and irregular surfaces. Creating an aesthetic result depends on the dentist harmonizing teeth of different shapes and sizes with the soft tissues for each patient, rather than treating each tooth individually.
Color
Tooth color perception is influenced by the shape of the tooth and its morphological position in the arch. For example, the lower front teeth are whiter than the upper teeth. Tooth color darkens with age. When smiling, the brightest teeth are the upper central incisors. The lateral incisors have a similar shade but are less bright. To achieve a natural look across the dentition, using shades correctly is essential when applying porcelain laminates.
Symmetry
Symmetry and balance are key concepts in aesthetics. Symmetry is the harmonious arrangement of several elements on either side of a central axis. By nature, human teeth are not exact mirror images on both sides of the midline; instead, two very similar structures facing each other create a symmetrical appearance.
Midline
The facial midline runs through the center of the face, perpendicular to the interpupillary line. One of the best ways to visualize the dental midline is to observe the dynamics of the smile. The facial midline and the midline between the upper incisors should coincide as closely as possible. In any restored dentition, a midline shift is the most significant and unacceptable flaw.
Smile Line
The lower edge of the upper lip forms the smile line of the upper front teeth, following the curvature of the inner border of the upper lip. A pleasing smile is achieved when the corners of the mouth are parallel to the interpupillary line and the occlusal plane, and the tips of the canine teeth lightly touch the lower lip. The smile line varies from person to person and is more pronounced and convex in women.
Gum Health
Healthy gums are normally pale pink. On the facial side, healthy gingiva extends 3 mm above healthy bone, and the tip of a stable papilla sits 5 mm from the bone between the crests. Prosthetic treatment should not begin until the health of the gum tissues has reached a sufficient level.
Advantages of Porcelain Laminate Veneers
Porcelain laminates offer many advantages: they require minimal preparation, their color remains stable, they are more resistant to abrasion than composites, they bond very strongly to enamel once acid-etched, they resist tensile and shear forces after bonding, they deliver excellent aesthetics, they resist fluid absorption, and preparation time is short.
Disadvantages of Porcelain Laminate Veneers
They also have some disadvantages: they are difficult to repair, their color is hard to change after bonding, fabrication is time-consuming, they are quite fragile before bonding, they are costly, they can be hard to hold in place on the tooth during try-in, and once the glaze is damaged they are harder to re-polish than composites.
Contraindications for Porcelain Laminate Veneers
- Bruxism and parafunctional habits such as clenching
- People with a high caries incidence and poor oral hygiene
- Teeth without sufficient enamel support: there must be enough enamel both for the veneer to cover the tooth surface and to achieve adequate adhesion.
- Class III malocclusion and edge-to-edge bite cases
- Teeth with severe crowding and rotation
- People who do contact sports such as boxing or wrestling
- Permanent teeth that have not fully erupted
- Porcelain laminate veneers are contraindicated in primary teeth and teeth with severe fluorosis, as acid etching cannot be performed effectively.
Dentist Can Altuğ Kaya