Why Does Biting Hurt? 8 Common Causes of Tooth & Jaw Pain When You Chew
A balanced, comfortable bite is absolutely essential for long-term oral and overall health. When your upper and lower teeth don’t fit together correctly, a condition known as malocclusion, or if a single tooth is damaged, the simple act of chewing can become painful.
This guide explores the most common reasons you might be experiencing pain when biting down and explains how a specialized occlusion evaluation can diagnose the root cause and bring lasting relief.
Eight Reasons Biting or Chewing Causes Pain
f you feel a sharp jolt or a dull ache when applying pressure to a tooth or jaw, it’s a signal that your masticatory system is under stress. The most common culprits include:
| Cause | Description | Evaluation Focus |
| 1. High Filling or Crown | Recent dental work that sits too “high” can take excessive force when you bite down, causing soreness and pressure. | Occlusal Adjustment |
| 2. Cracked or Fractured Tooth | A crack (often invisible) allows pressure to reach the sensitive inner pulp and nerves. | Transillumination, Bite Testing |
| 3. Tooth Decay (Cavity) | Deep cavities expose the inner tooth structure, causing sharp sensitivity to pressure, cold, or sweets. | X-rays, Visual Exam |
| 4. Dental Abscess | An infection at the root tip causes a pocket of pus to form in the bone, creating pressure when you bite. | X-rays, Palpation |
| 5. Malocclusion (Bad Bite) | Misaligned teeth or an improper bite pattern causes uneven force distribution across your teeth and jaw joints. | Occlusion Evaluation |
| 6. Bruxism (Teeth Grinding) | Chronic grinding wears down enamel and stresses the jaw joints and muscles. | Muscle Palpation, Wear Patterns |
| 7. TMJ Disorder | Problems with the Temporomandibular Joints (TMJ) can cause pain that radiates into the teeth, especially when chewing. | Joint Auscultation, Range of Motion |
| 8. Sinus Pressure | Inflammation from a cold or allergy can put pressure on the roots of your upper back teeth. | Symptoms Check, X-rays |
What is an Occlusion Evaluation and Why Do You Need One?
An occlusion evaluation is a detailed, in-depth assessment of how your upper and lower teeth meet when you bite, chew, or rest. It goes beyond a standard check-up to examine the complex mechanics of your jaw joints and surrounding facial muscles.
In simple terms, it precisely determines the source of pain by answering: Are your teeth, muscles, and jaw joint working together in harmony?
“The American Dental Association (ADA) acknowledges that problems with the Temporomandibular Joints (TMJ), which make it possible to open and close your mouth, can be caused by various factors, including ‘tooth and jaw alignment,’ and often recommends checking the joints and muscles for tenderness, clicking, or difficulty moving as part of the diagnosis for Temporomandibular Disorders (TMD).”
Key Diagnostic Components:
TMJ and Muscle Assessment: The dentist manually checks for joint sounds (clicking/popping) and palpates the masticatory (chewing) muscles for tenderness.
Digital Bite Analysis: Advanced systems can be used to precisely measure the timing and force of tooth contact, revealing which teeth are hitting too hard or too early.
Visual Wear Pattern Check: The dentist looks for specific patterns of uneven wear, chipping, or flattening on the biting surfaces, which are strong indicators of a bite imbalance (malocclusion) or bruxism.
The Critical Link: Malocclusion and Jaw Pain (TMD)
Malocclusion (a bad bite) and Temporomandibular Joint Disorders (TMD) are often linked. According to Mount Sinai, when your teeth don’t meet properly, the jaw muscles have to strain and shift the jaw to find a comfortable position, leading to muscle fatigue and joint strain.
Symptoms of this strain include:
Chronic headaches or migraines.
Clicking, popping, or grating sounds in the jaw joint.
Tightness or soreness in the jaw muscles, especially in the morning.
Difficulty opening your mouth wide.
Benefits of Correcting Occlusal Issues
Addressing a misaligned bite is a fundamental step in achieving long-term oral stability and comfort.
Reduced Jaw Pain: Eliminates muscle strain and joint stress
Prevent Tooth Damage: Ensures forces are distributed evenly, protecting teeth from fracture and excessive wear. Periodontal Center of Excellence
Improved Longevity of Restorations: New crowns, bridges, and fillings have a higher success rate when placed on a balanced, stable bite.
Treatment Options Post-Evaluation
The results of your comprehensive evaluation will lead to a customized treatment plan. This plan is designed to establish a stable, functional, and pain-free bite.
- Occlusal Adjustment (Coronoplasty): Minor, precise reshaping of tooth enamel to eliminate premature contacts or interferences.
- Occlusal Appliances (Splints/Nightguards): Custom-made devices worn to protect teeth from grinding forces and stabilize the jaw joint, relieving muscle tension.
- Orthodontics: Aligners or braces to correct significant underlying tooth or jaw alignment issues. Wikipedia
If you experience pain when biting, jaw discomfort, headaches, or notice signs of wear, an occlusion evaluation can help you understand the root cause and prevent long-term issues.
Glow Up Dentistry combines advanced technology and patient-focused care for the most accurate occlusion assessments.
Ready to find relief? Contact Glow Up Dentistry today to schedule your evaluation and take the first step toward a perfectly balanced bite.
Schedule Your Visit with Glow Up Dentistry Today
Get in touch with the dental experts of Glow Up Dentistry in Richmond, TX, to get various dental treatments. Have more questions? Call us at (346) 843-8743!
Dr. Ginger Unegbu DDS
Dr. Ginger Unegbu, DDS, is a highly skilled and compassionate dentist dedicated to providing exceptional oral care. A proud Houston native with Nigerian heritage, she earned her bachelor's degree in Exercise Science from the University of Houston before obtaining her Doctor of Dental Surgery (DDS) from Howard University College of Dentistry in 2019.
As a recognized expert in preventive, restorative, and cosmetic dentistry, Dr. Unegbu is an esteemed member of the Academy of General Dentistry and the International Dental Implant Association. She has received numerous accolades, including the prestigious Student of the Year Award from the Academy of Osseous Integration. Her commitment to patient education and advanced dental treatments ensures that individuals receive top-tier, evidence-based care for optimal oral health.