PERMANENT DENTURES

Permanent Dentures: A Complete Guide

Permanent dentures — also called fixed implant-supported dentures or hybrid prostheses — are a tooth replacement solution anchored directly to dental implants in the jawbone. Unlike traditional removable dentures that sit on the gums and rely on adhesive or suction, permanent dentures are screwed or cemented onto implants and can only be removed by a dentist. The result: teeth that look, feel, and function like the real thing.

At Lake Norman Oral & Facial Surgery, Dr. Raymond J. Haigney II — a double board-certified oral and maxillofacial surgeon — designs permanent denture solutions tailored to each patient's anatomy, bone volume, and lifestyle, restoring full chewing function and confidence.

How Permanent Dentures Differ from Removable Dentures

The distinction is fundamental:

• Removable dentures rest on the gum ridge and are held in place by suction (upper) or gravity and adhesive (lower). They shift during eating and speaking, restrict diet, and accelerate bone loss because no force is transmitted into the jaw.
• Permanent dentures are fixed to 4–8 implants per arch. They do not move. Chewing forces transfer through the implants into the bone, preserving jawbone volume the same way natural tooth roots do.

Key performance differences:

• Bite force: removable dentures restore ~20% of natural bite force. Permanent dentures restore 80–90%.
• Diet: removable denture wearers avoid steak, nuts, apples, corn. Permanent denture patients eat everything.
• Bone health: the jaw loses ~25% of its width in the first year after tooth loss under a removable denture. Implant-supported permanent dentures halt this resorption.
• Speech: removable upper dentures cover the palate, affecting taste and sometimes causing a lisp. Permanent dentures are horseshoe-shaped — the palate stays open.
• Maintenance: removable dentures require nightly removal, soaking, adhesive application. Permanent dentures are brushed in place like natural teeth.

Types of Permanent Dentures

Acrylic Hybrid (Titanium-Reinforced)

A titanium substructure (bar) is screwed onto the implants, and acrylic teeth and gum tissue are layered over it. This is the most common type used in All-on-4 restorations. Advantages: lighter weight, easier to repair or reline chairside, lower cost. Lifespan: 7–12 years before the acrylic needs replacement (the titanium bar and implants last much longer).

Zirconia (Full-Contour)

Monolithic zirconia — a ceramic material — is milled from a single block using CAD/CAM technology. It is the strongest and most durable permanent denture material available. Advantages: extremely resistant to chipping, staining, and wear. More natural translucency than acrylic. Lifespan: 15–25+ years. Disadvantage: heavier, more expensive, and difficult to repair if fractured.

Porcelain-Fused-to-Metal (PFM)

Individual porcelain crowns fused to a metal framework, supported by 6–8 implants. This approach provides the highest level of individual tooth aesthetics but is the most expensive and technique-sensitive option. Typically reserved for patients who prioritize maximum cosmetic customization.

The Treatment Process

1. Consultation & 3D imaging — CBCT scan maps bone volume and anatomy. Dr. Haigney presents implant options based on findings.
2. Implant surgery — 4–8 implants placed per arch under IV sedation. In many cases, remaining teeth are extracted at the same appointment.
3. Temporary prosthesis — a same-day temporary fixed bridge is attached to the implants so patients never leave without teeth.
4. Healing (3–6 months) — osseointegration occurs as bone fuses to the implant surfaces. Patients wear the temporary bridge during this period.
5. Final prosthesis fabrication — digital or physical impressions are taken, and the final permanent denture is custom-manufactured in a dental laboratory.
6. Delivery & fitting — the final restoration is screwed onto the implants, bite is adjusted, and aesthetics are verified.

Candidacy

Candidates for permanent dentures include patients who are fully edentulous (missing all teeth) or have teeth so compromised that extraction is the best option. Key requirements:

• Sufficient jawbone for implant placement (or willingness to undergo bone grafting)
• Good general health — controlled diabetes, no active cancer treatment, non-smoker preferred
• Commitment to oral hygiene and regular dental follow-ups
• Realistic expectations about the treatment timeline (4–8 months total)

Cost & Long-Term Value

Permanent dentures range from $20,000–$40,000 per arch depending on the number of implants, material (acrylic hybrid vs. zirconia), and case complexity. While significantly more expensive upfront than removable dentures ($2,000–$5,000), the long-term economics favor permanent solutions: no adhesive costs, no relines every 2–3 years, no replacement every 5–7 years, and — most importantly — preservation of jawbone that would otherwise require costly bone grafting if implants are pursued later.

More on Permanent Dentures – Implant-Supported Dentures