Complete dentures replace all teeth in one or both jaws. For patients requiring extraction of all remaining teeth, complete dentures restore function, esthetics, and quality of life. Understanding the process from extraction through adaptation helps set realistic expectations.
Indications for Complete Dentures
Complete dentures are necessary when all teeth are missing or require extraction. Reasons for extraction include advanced decay, gum disease, trauma, or other conditions making tooth retention impossible.
Patients with remaining natural teeth often attempt to preserve them through various treatments. However, for patients where extraction becomes necessary, complete dentures provide restoration.
Pre-Extraction Planning
If extractions are planned, the prosthodontist may fabricate an immediate denture before teeth are removed. This approach uses pre-extraction impressions to create a denture that's inserted immediately after extraction.
The advantage is that the patient leaves the office with teeth and avoids the period of being edentulous (without teeth). However, the denture requires multiple adjustments as tissues heal and remodel.
Alternatively, the patient may wait several months after extraction for tissues to heal before denture fabrication, allowing more stable denture fabrication.
Tooth Extraction and Initial Healing
After extraction, the alveolar bone (bone supporting the teeth) begins remodeling. The significant bone loss occurs in the first several months after extraction—approximately 25 percent of bone width is lost in the first year.
Bone remodeling affects denture fit—a well-fitting denture at one month may become loose within several months as bone resorbs.
Waiting Period After Extraction
The optimal timing for denture fabrication depends on the approach chosen. Immediate dentures are inserted at extraction. Tissue-conditioning materials are used to adjust the denture to healing tissues.
Waiting for complete healing (six to eight months) allows the denture to be fabricated on settled tissues, reducing adjustment needs. However, this approach requires the patient to be edentulous during healing.
Many prosthodontists recommend a middle approach—fabricating the definitive denture after 3 to 4 months of healing when most bone resorption has occurred but healing is essentially complete.
Denture Fabrication Process
Impressions are taken of both jaws in a custom impression tray. These impressions capture the anatomy available for denture support.
Bite registration determines the vertical dimension of occlusion—the distance between jaws at rest and when teeth are together.
Based on impressions and measurements, models are fabricated and the denture teeth arrangement is designed. The denture is fabricated using acrylic resin and denture teeth.
Try-In Appointment
Before the denture is finalized, a try-in appointment allows evaluation of esthetics, speech, and occlusion (bite). Adjustments are made to tooth shade, size, position, and contour to optimize appearance and function.
The patient practices speaking and swallowing with the denture in place.
Insertion Appointment
The finished denture is inserted and adjustments are made for comfort and proper fit. The patient receives instruction on insertion, removal, and care.
Significant adjustment is often necessary at insertion—the denture may need relief in areas of pressure, and the bite may require adjustment.
Adaptation Period
The adaptation period—adjusting to dentures—takes weeks to months for most people. Initially, dentures feel bulky and strange. Saliva production increases. Speech is affected.
Most people gradually adapt, though adaptation is easier for those accustomed to removable appliances like retainers.
Adjustment Appointments
Multiple adjustment appointments are typically necessary in the first few weeks. As the patient becomes more accustomed to the denture and tissues continue remodeling, adjustments optimize fit and comfort.
Sore spots develop where the denture rubs tissues—these require relief by adjustment.
Learning to Wear Dentures
Proper insertion and removal technique is crucial. The denture should be inserted and removed over the front teeth first, then the back.
Some people develop high levels of skill with dentures, while others struggle with comfort or retention.
Retention Challenges
Denture retention (keeping the denture in place) depends on several factors. Adequate saliva is important for retention—dry mouth reduces retention.
Bone resorption reduces retention over time. As the jaw resorbs, the denture becomes loosier. Relines add material to the underside of the denture, improving fit as bone resorbs.
Neuromuscular Adaptation
Beyond learning to insert and remove the denture, patients must develop neuromuscular control of the denture. The tongue muscles learn to position the denture and hold it during function.
Initially, dentures easily dislodge. With practice, the muscles learn to position the denture and maintain stability.
Speech Changes
Speech is altered when dentures are inserted. Sounds requiring the tongue to contact the teeth (s and z sounds) are particularly affected initially.
Most people experience gradual improvement in speech over weeks as they adapt, though some permanent alteration to speech may occur with complete dentures.
Eating Adaptation
Eating with dentures requires learning new techniques. Biting force is reduced with dentures compared to natural teeth. Softer foods are easier initially.
Many patients gradually adapt to eating normally, though some permanently prefer softer foods.
Bone Resorption Over Time
Bone resorption continues throughout life, though the rate decreases over time. As bone resorbs, dentures become progressively looser.
Relines—adding material to the underside of the denture—restore fit as bone changes. Relines are typically needed annually or as tissues change.
Denture Durability and Replacement
Dentures typically last 5 to 10 years before requiring replacement. Acrylic resin degrades with time, becoming brittle. Teeth wear down.
Complete replacement or significant refabrication is often needed when dentures no longer provide adequate function or esthetics.
Cost Considerations
Complete dentures cost significantly less than tooth implants but more than partial dentures or single restorations.
Insurance coverage varies—some plans cover dentures, others don't. Checking coverage helps plan financial impact.
Psychological Adjustment
Beyond physical adaptation, patients adjust psychologically to wearing removable appliances. Some people experience grief over tooth loss and adjustment to dentures.
Accepting dentures as a valid solution allows patients to focus on regaining function and quality of life.
Complete dentures represent a significant transition from natural teeth, but for many patients they restore function and esthetics. Understanding the fabrication process, adaptation period, and ongoing maintenance allows patients to set realistic expectations and successfully transition to denture wear.