Inlays & Onlays

Inlays and onlays are custom-fabricated indirect dental restorations made from ceramic or composite materials that repair teeth with moderate decay, fracture, or damage — offering a conservative, long-lasting alternative to both direct fillings and full porcelain crowns. At Picasso Dental Clinic inside Vinmec Da Nang International Hospital (Nha Khoa Picasso Vinmec Da Nang), inlays and onlays are precision-crafted using CAD/CAM technology and premium imported ceramic materials, delivering restorations that preserve maximum natural tooth structure while providing exceptional strength and aesthetics.

For international patients seeking a middle-ground solution between a simple filling and a full crown, inlays and onlays at Picasso Vinmec offer outstanding clinical outcomes at 50 to 70% less than Western dental prices.

What Are Inlays and Onlays?

Inlays and onlays — sometimes called indirect fillings, partial crowns, or conservative restorations — are custom-made restorations fabricated in a dental laboratory from ceramic, composite resin, or (less commonly) gold. They are bonded into or onto a prepared tooth to replace areas of decay, fracture, or old failing restorations.

Inlay vs. Onlay: The Distinction

• Inlay: Fits within the cusps (raised points) of a back tooth, restoring the area between the cusps without extending over the biting edges. Think of it as a precision-fitted puzzle piece that fills the inner surface of the tooth.

• Onlay: Extends over one or more cusps, providing broader coverage when damage involves the biting surface or cusp tips. An onlay replaces a larger area of the tooth than an inlay but still preserves more structure than a full crown.

Both types are fabricated outside the mouth using digital impressions and CAD/CAM technology, then bonded to the prepared tooth with adhesive cement — unlike direct fillings, which are packed and cured inside the tooth in a single visit.

Where Inlays and Onlays Fit in the Restoration Spectrum

Who Is a Good Candidate for Inlays and Onlays?

Inlays and onlays are ideal for patients who have:

• Moderate tooth decay — too large for a direct filling to be predictable, but not extensive enough to require a full crown
• Cracked or fractured teeth — where the crack involves part of the biting surface but the tooth is otherwise structurally sound
• Old, large, or failing fillings — amalgam or composite fillings that have deteriorated and need replacement with a stronger, longer-lasting restoration
• Worn biting surfaces — teeth with localized wear from grinding or erosion that need rebuilding
• Cosmetic upgrade — patients who want to replace visible silver (amalgam) fillings with tooth-colored ceramic restorations

When a Crown Is More Appropriate

If more than 50 to 60% of the tooth’s biting surface is damaged, or if the tooth has been weakened by root canal treatment, a full porcelain crown may provide better protection and longevity. Our dentists at Picasso Vinmec will assess the extent of damage and recommend the most conservative yet effective restoration.

When a Filling Is Sufficient

Small cavities that involve less than one-third of the biting surface can usually be restored with a direct composite filling. Direct fillings are faster (single visit), more affordable, and perfectly adequate for small restorations.

Benefits of Inlays and Onlays

Maximum Tooth Preservation

The most significant advantage of inlays and onlays is their conservative approach to tooth structure. Unlike a full crown that requires reducing the entire tooth by 1.5 to 2 mm on all surfaces, an inlay or onlay only replaces the specific area of damage. This means more of your natural, healthy tooth is preserved — an important principle in modern dentistry.

Superior Strength and Durability

Laboratory-fabricated ceramic restorations are significantly stronger than direct composite fillings. They are fired, pressed, or milled under controlled conditions that produce a denser, more uniform material. Clinical studies demonstrate that ceramic inlays and onlays have survival rates exceeding 90% at 10 years — substantially better than large direct fillings.

Precise Marginal Fit

Because inlays and onlays are fabricated on a precise model of your prepared tooth, the margins (edges where the restoration meets the tooth) are exceptionally accurate. A tight marginal fit:

• Reduces the risk of secondary decay at the restoration edge
• Creates a smooth junction that is comfortable for the tongue and easy to clean
• Prevents microleakage (seepage of bacteria and fluids under the restoration)

Minimal Shrinkage

Direct composite fillings shrink by 2 to 5% during the curing (hardening) process, which can create gaps or stress within the tooth. Indirect inlays and onlays are cured in the laboratory under optimal conditions, with shrinkage limited to the thin layer of bonding cement — resulting in a more stable, predictable restoration.

Natural Aesthetics

Ceramic inlays and onlays are fabricated from tooth-colored materials that replicate the translucency and color of natural enamel. Once bonded, they are virtually invisible — a significant aesthetic improvement over silver amalgam fillings.

Reinforcement of Weakened Teeth

While large fillings can weaken remaining tooth walls (potentially leading to fracture), bonded ceramic inlays and onlays actually strengthen the tooth by distributing biting forces across the adhesive bond. This structural reinforcement reduces the risk of cusp fracture.

Biocompatibility

All-ceramic inlays and onlays are metal-free and biocompatible. They do not corrode, do not release mercury (unlike amalgam), and are well-tolerated by tooth and gum tissue.

Types of Inlay and Onlay Materials at Picasso Vinmec

Lithium Disilicate (E.max) Ceramic

The gold standard for aesthetic indirect restorations:

• Flexural strength: 400 MPa — strong enough for premolars and molars under normal bite forces
• Aesthetics: Exceptional translucency that closely mimics natural enamel
• Wear properties: Similar to natural enamel — gentle on opposing teeth
• Best for: Premolars and visible surfaces where aesthetics are important

Zirconia

The strongest ceramic option for patients with heavy bite forces:

• Flexural strength: 800 - 1,000+ MPa — virtually unbreakable under normal conditions
• Aesthetics: Very good (multi-layered zirconia) to good (monolithic zirconia)
• Wear properties: Harder than natural enamel — opposing teeth should be monitored
• Best for: Molars, bruxism patients, areas requiring maximum strength

Composite Resin (Indirect)

A more affordable alternative with good aesthetics:

• Flexural strength: 150 - 200 MPa — adequate for moderate bite forces
• Aesthetics: Good shade matching and natural appearance
• Wear properties: Softer than ceramic — may wear faster in high-stress areas
• Best for: Budget-conscious patients, temporary solutions, moderate-sized restorations

Material Comparison

The Inlay/Onlay Procedure at Picasso Vinmec

Visit 1: Preparation and Impressions (45 Minutes)

1. Local anesthesia is administered for comfortable treatment
2. Removal of decay or old filling — all damaged or deteriorated material is carefully excavated
3. Tooth preparation — the cavity is shaped with smooth walls and defined margins to accept the inlay or onlay
4. Digital impressions — an intraoral scanner captures a precise 3D model of the prepared tooth and adjacent teeth
5. Shade selection — the ceramic shade is matched to your natural tooth color using a spectrophotometer
6. Temporary restoration — a provisional filling is placed to protect the prepared tooth during the fabrication period

The digital impressions are transmitted to our dental laboratory, where your custom inlay or onlay is designed using CAD software and fabricated by CAM milling or pressing over 5 to 10 working days.

Visit 2: Bonding (45 Minutes)

1. Remove temporary restoration and clean the prepared tooth
2. Try-in — the fabricated inlay or onlay is placed to verify fit, contacts, shade, and bite
3. Adjustments — minor modifications if needed for optimal fit
4. Etching and bonding — the tooth surface and the inlay/onlay interior are treated with acid etch and bonding agent
5. Cementation — the restoration is bonded with light-cured resin cement
6. Bite adjustment — occlusion is verified and refined for comfortable function
7. Final polish — margins are smoothed and polished for a seamless junction with the natural tooth

Cost of Inlays and Onlays in Da Nang, Vietnam

Pricing at Picasso Vinmec

Cost Comparison: Da Nang vs. Western Countries

What Is Included in the Price

• Comprehensive examination and treatment planning
• Local anesthesia
• Removal of decay or old filling material
• Tooth preparation and digital impressions
• Temporary restoration
• Laboratory fabrication with premium materials
• Final bonding and occlusal adjustment
• Post-treatment assessment
• Aftercare instructions

Aftercare Instructions for Inlays and Onlays

The First 24 to 48 Hours

• Avoid chewing hard foods on the restored tooth for 24 hours while the cement fully sets
• Mild sensitivity to hot and cold is normal and should resolve within a few days
• If the bite feels uneven, contact the clinic for a quick adjustment

Daily Oral Hygiene

• Brush twice daily with a soft-bristled toothbrush and fluoride toothpaste
• Floss daily — slide floss carefully through the contact points adjacent to the inlay or onlay
• Use an interdental brush if there are areas that floss cannot easily reach
• Rinse with alcohol-free fluoride mouthwash for additional protection

Long-Term Care

• Avoid excessive force — do not chew ice, hard candy, or use teeth as tools
• Wear a night guard if you grind your teeth — bruxism can damage any restoration over time
• Regular dental check-ups every 6 months for professional cleaning and restoration assessment
• Report any issues — sensitivity, roughness, or a feeling that the restoration has loosened

For International Patients

• Your home dentist can provide routine maintenance using the treatment records we supply
• Contact Picasso Vinmec via email for any post-treatment concerns
• Schedule follow-up during your next visit to Da Nang

Risks and Considerations

Temporary Sensitivity

Some patients experience mild sensitivity to temperature or biting pressure for a few days after inlay or onlay placement. This is common with any bonded restoration and typically resolves as the tooth adapts to its new restoration.

Fracture Risk

While ceramic inlays and onlays are strong, they can fracture under extreme forces — particularly in patients with uncontrolled bruxism. A night guard is strongly recommended for patients who grind or clench.

Secondary Decay

If oral hygiene is neglected, decay can develop at the margins of any restoration. Proper daily hygiene and regular professional cleanings are essential for preventing secondary decay around inlays and onlays.

Debonding

In rare cases, the adhesive bond between the inlay/onlay and the tooth can fail, causing the restoration to loosen or fall out. If this occurs, save the restoration and contact your dentist — in most cases, it can be re-bonded.

Two-Visit Requirement

Unlike direct fillings that are completed in one visit, inlays and onlays require two appointments with a waiting period for laboratory fabrication. For dental tourists, this means planning at least one week in Da Nang (or scheduling a return visit for the bonding appointment).

Why Choose Picasso Vinmec Da Nang for Inlays and Onlays?

JCI-Accredited Hospital Setting

All procedures at Picasso Vinmec are performed inside Vinmec Da Nang International Hospital, ensuring the highest standards of sterilization, infection control, and clinical safety. Hospital-grade protocols provide an extra layer of assurance for patients receiving bonded ceramic restorations.

Precision Digital Workflow

Picasso Vinmec employs a fully digital workflow for inlay and onlay fabrication:

• Intraoral 3D scanning — eliminates uncomfortable traditional impressions
• CAD design — computer-aided design ensures precise fit and anatomy
• CAM fabrication — computer-aided manufacturing mills or presses the restoration from solid ceramic blocks
• Digital shade matching — spectrophotometric measurement for accurate color replication

Premium Imported Materials

All inlay and onlay materials — including E.max lithium disilicate, zirconia, and bonding cements — are sourced from internationally recognized manufacturers in Germany, Japan, and the United States. We use only branded, traceable materials with documented quality certifications.

Experienced Restorative Dentists

Dr. Le Ho Viet An and Dr. Le Thanh Toan have extensive experience in conservative restorative techniques, including precision preparation for inlays and onlays. Their philosophy prioritizes preservation of natural tooth structure — recommending the most conservative restoration that will achieve a durable, long-lasting result.

Dental Tourism Convenience

Inlays and onlays at Picasso Vinmec require two visits spread over 5 to 10 days — a timeline that fits comfortably within most dental tourism itineraries. Between appointments, patients enjoy Da Nang’s beaches, cuisine, and attractions, including Hoi An Ancient Town, the Marble Mountains, and Ba Na Hills.

Complementary Treatments

Inlays and onlays are often part of a broader treatment plan at Picasso Vinmec:

• Porcelain crowns — for teeth with more extensive damage beyond onlay indication
• Dental fillings — for smaller cavities that do not require indirect restoration
• Full-mouth restoration — inlays and onlays as components of comprehensive rehabilitation
• Teeth whitening — brighten teeth before shade-matching ceramic restorations
• Smile design — inlays/onlays on posterior teeth coordinated with veneers on front teeth

Schedule Your Inlay/Onlay Consultation

If you have teeth with moderate damage, large old fillings, or cavities that are too big for a standard filling, ceramic inlays and onlays at Picasso Dental Clinic inside Vinmec Da Nang International Hospital offer the ideal balance of conservation, strength, and beauty.

Contact Picasso Vinmec Da Nang:

• Phone: 024 7308 8848
• Email: [email protected]
• Address: Vinmec Da Nang International Hospital, 30 Thang 4, Hoa Cuong Bac, Hai Chau, Da Nang, Vietnam

Request a consultation to determine whether inlays, onlays, or an alternative restoration is the best option for your teeth — we are happy to review X-rays or photographs remotely before your visit to Da Nang.