An upper denture may need replacing when it becomes loose, worn or discoloured, or no longer fits as the underlying ridge changes shape. This educational case note describes replacing a deteriorated upper denture at Greenvale Dental House. It is general information only; individual results vary and a clinical consultation is needed to assess suitability.
Presenting Clinical Problem
A patient presented to Greenvale Dental House with an ageing upper denture that no longer fit or looked as it once did.
- Discolouration despite regular cleaning
- Loss of retention affecting speech and function
- Visible wear and chipping of the denture teeth
- Concerns about appearance
The primary objective was to replace the deteriorated denture with an improved fit and appearance.
Treatment Approach
Care began with a clinical examination of the existing denture and the supporting tissues.
Assessment and planning
- Examination of the existing denture’s condition and fit
- Evaluation of the upper ridge anatomy and tissue health
- Assessment of the opposing lower teeth or denture and the bite relationship
- Discussion of denture design options and material selection
- Treatment timeline and appointment scheduling
Denture fabrication
- Primary impressions of the upper ridge
- A custom tray for detailed final impressions
- Jaw relationship records and vertical dimension checks
- Tooth selection for shade, size and arrangement
- A wax try-in to check appearance and function
- Laboratory processing and finishing
Delivery and adjustment
- Insertion with initial fit checks
- Occlusal adjustment for a balanced bite
- Instructions for insertion, removal and care
- Follow-up adjustment appointments as required
Clinical Outcome
The replacement was completed over approximately six visits across two months. The new denture allowed improved tissue adaptation, updated tooth selection and restoration of the vertical dimension that may have been lost with the previous denture.
Individual responses vary and outcomes cannot be guaranteed. Many patients need an adaptation period with a new denture, even when replacing an old one, and changes in base thickness, tooth position or vertical dimension can initially affect speech and comfort. Ridge resorption continues over time, so periodic relines (often every two to three years) or replacement (often every five to ten years) may be needed. Suitability is determined at a clinical consultation.
Frequently Asked Questions
Why do dentures become discoloured over time?
Discolouration comes from staining substances such as coffee, tea and tobacco, along with plaque, calculus and gradual ageing of the acrylic. Some discolouration is intrinsic to aged acrylic and cannot be cleaned away. Regular professional cleaning and good home care slow the process but do not prevent it, so replacement eventually becomes necessary.
How often should dentures be replaced?
Dentures often last around five to ten years, though this varies. Ridge resorption, tooth wear, acrylic ageing, changes in the bite and care habits all affect lifespan. A loose denture can accelerate ridge loss and is best assessed promptly rather than waiting for a scheduled replacement.
Why do dentures become loose over time?
Looseness is mainly caused by ongoing ridge resorption, a normal process after tooth loss. As the ridge changes shape, the denture no longer matches the underlying tissues. Weight loss, some medications and general health conditions can speed these changes. Periodic relines can restore fit, though replacement is usually needed eventually.
