How Should Lower Dentures Fit

How Should Lower Dentures Fit? A Comprehensive Guide

Lower dentures present unique challenges compared to their upper counterparts. A proper fit is crucial for comfort, speech, eating, and overall oral health. This guide will walk you through what to expect from a well-fitting lower denture and what to watch out for.

Understanding the Challenges of Lower Denture Fit

The lower jaw has a smaller ridge of bone compared to the upper jaw, making it more difficult to create a secure and stable fit for dentures. The lower jaw also has more movement, further impacting stability. This means that lower dentures are more prone to shifting and feeling loose.

Key Factors Affecting Lower Denture Fit:

• Bone Resorption: The gradual loss of bone in the jaw after tooth extraction is a common occurrence. This can lead to dentures becoming loose over time.
• Muscle Attachments: The muscles around the lower jaw are more active and can affect denture stability.
• Saliva: Saliva plays a crucial role in denture adhesion. Too little saliva can lead to dryness and discomfort, while excessive saliva can lead to slippage.
• Ridge Shape and Size: Variations in the shape and size of the jaw bone can influence the fit and stability of the denture.

What a Properly Fitting Lower Denture Should Feel Like

A well-fitted lower denture shouldn't feel overly tight or loose. Here's what you should experience:

• Comfort: The denture should feel comfortable, with minimal pressure points. Discomfort is a sign that the fit needs adjustment.
• Stability: The denture should remain relatively stable in your mouth, even during chewing or speaking. Excessive movement or shifting indicates a fit problem.
• Secure Fit: The denture should feel secure enough to stay in place without constantly needing readjustment. However, it shouldn't feel constricting or painful.
• Freedom of Movement: You should be able to easily open and close your mouth without hindrance.
• Speech Clarity: You should be able to speak clearly and naturally without lisping or slurring your words.

Signs Your Lower Denture Doesn't Fit Properly

If your lower denture doesn't fit correctly, you may experience several issues:

• Soreness or Pain: This is a common sign of ill-fitting dentures, often caused by pressure points on the gums or bone.
• Loose Fit: A denture that is constantly shifting or falling out is not properly fitted.
• Difficulty Chewing or Speaking: Difficulty speaking or chewing is a clear indication of an ill-fitting denture that needs adjustment or replacement.
• Food Trapping: Food accumulating under the denture is a sign of an inadequate seal and poor fit.
• Irritation or Ulcers: Persistent irritation or sores on the gums can develop from an ill-fitting denture.

What to Do If Your Lower Denture Doesn't Fit Well

If you're experiencing any of the above issues, it's crucial to consult your dentist or prosthodontist. They can assess the fit of your dentures and make necessary adjustments or create new ones if needed.

Maintenance and Regular Check-ups are Crucial:

Regular check-ups and proper denture care are essential for maintaining a good fit and preventing problems. This includes daily cleaning and regular visits to your dentist for professional cleaning and assessment.

By understanding what a proper fit feels like and knowing the signs of an ill-fitting denture, you can ensure optimal comfort, function, and oral health with your lower dentures. Don't hesitate to seek professional help if you are experiencing any difficulties. Remember, a comfortable and well-fitting denture greatly improves your quality of life.