Dentistry focuses on diagnosing, preventing, and treating conditions of the teeth, gums, and oral structures, supporting oral health and overall well-being.

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Diagnosis and Evaluation

Oral Health Therapy

A comprehensive diagnosis is the foundation of any successful oral health therapy plan. The evaluation phase goes far beyond a quick look for cavities. It involves a detailed systematic investigation of the soft tissues, hard tissues, and the patient’s biological risk factors.

The oral health therapist employs a variety of diagnostic tools to gather data. This data is then synthesized to create a personalized picture of the patient’s oral health. The goal is to identify active disease, assess future risk, and determine the most appropriate therapeutic interventions.

Modern diagnostics utilize both clinical measurements and advanced technology. This ensures that no aspect of the oral environment is overlooked. From the health of the gums to the integrity of existing restorations, every factor is documented.

  • Comprehensive review of medical and dental history
  • Visual and tactile examination of hard and soft tissues
  • Periodontal charting and data recording
  • Radiographic assessment of bone levels
  • Analysis of occlusion and functional forces
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Periodontal Charting and Probing

The periodontal chart is the map of the patient’s gum health. The therapist uses a calibrated probe to measure the space between the tooth and the gum, known as the sulcus. These measurements are taken at six points around every tooth.

In a healthy state, these readings are low. High readings indicate pockets where bone loss has occurred. This process also records gingival recession, bleeding points, and suppuration, providing a baseline for monitoring disease progression.

  • Measurement of pocket depths in millimeters
  • Recording of clinical attachment loss
  • Mapping of bleeding on probing sites
  • Assessment of furcation involvement in multi rooted teeth
  • Documentation of tooth mobility grades
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Plaque Disclosing and Indices

Oral Health Therapy

To accurately assess a patient’s home care, therapists often use disclosing agents. these are harmless dyes that stain bacterial biofilm. New plaque stains one color, while mature, high risk plaque stains another.

This provides an objective score of hygiene efficiency, known as a plaque index. It transforms invisible bacteria into a visual map, allowing the patient to see exactly where they are missing during their daily routine.

  • Application of two tone disclosing solution
  • Visual identification of mature vs. immature plaque
  • Calculation of a percentage based plaque score
  • Highlighting of high risk areas for patient education
  • Tracking of hygiene improvement over subsequent visits

Radiographic Analysis

X rays are essential for seeing what lies beneath the surface. Intraoral radiographs, such as bitewings and periapicals, reveal the level of the bone supporting the teeth. They are crucial for diagnosing interproximal decay and subgingival calculus.

The therapist evaluates the crestal bone for signs of resorption. Radiographs also show the fit of existing fillings and crowns, helping to identify overhangs that may trap bacteria and contribute to inflammation.

  • Evaluation of interproximal bone height
  • Detection of subgingival calculus deposits
  • Identification of cavities between teeth
  • Assessment of bone density and pattern
  • Checking for pathology at the root apex

Caries Risk Assessment

Oral Health Therapy

Diagnosis involves predicting the future risk of decay. The therapist performs a Caries Risk Assessment (CAMBRA) to determine the likelihood of new cavities developing. This considers biological, behavioral, and clinical factors.

Factors such as diet frequency, saliva flow, fluoride exposure, and past cavity history are weighed. This places the patient into a low, moderate, or high risk category, which dictates the intensity of the preventive therapy required.

  • Analysis of sugar intake frequency
  • Evaluation of fluoride exposure history
  • Assessment of current active decay lesions
  • Review of salivary protective factors
  • Determination of recall interval based on risk

Intraoral Photography

Digital photography is a powerful diagnostic and educational tool. High resolution images of the teeth and gums allow for the documentation of conditions that may not be visible on X rays, such as cracks, wear patterns, and soft tissue anomalies.

Photos serve as a permanent record of the patient’s condition at a specific point in time. They are invaluable for monitoring changes over years, such as the progression of gum recession or the wear of tooth surfaces.

  • Documentation of soft tissue lesions
  • Recording of wear facets and erosion
  • Visual baseline for monitoring gum recession
  • Patient education through magnified images
  • Tracking of staining and aesthetic changes

Oral Cancer Screening

Every evaluation includes a screening for oral cancer and pathology. The therapist systematically examines the lips, tongue, cheeks, floor of the mouth, and throat. They look for color changes, lumps, or ulcerations.

Early detection is critical for survival rates in oral cancer. This screening also identifies benign conditions like lichen planus or geographic tongue, which may require management or monitoring.

  • Visual inspection of all mucosal surfaces
  • Palpation of the lymph nodes in the neck
  • Examination of the lateral borders of the tongue
  • Assessment of the floor of the mouth
  • Identification of leukoplakia or erythroplakia

Salivary Diagnostics

For patients with high decay rates or dry mouth, specific salivary testing may be performed. This involves collecting saliva to measure its flow rate, consistency, and pH level.

Advanced tests can also identify high levels of specific bacteria, such as Streptococcus mutans or Lactobacilli. Understanding the biological makeup of the saliva helps in prescribing targeted chemical therapies.

  • Measurement of stimulated and unstimulated flow rates
  • Testing of salivary buffering capacity
  • Microbiological testing for cariogenic bacteria
  • Assessment of salivary consistency and viscosity
  • Identification of acidic pH levels

Occlusal and Functional Analysis

The way teeth bite together affects their health. The therapist checks for signs of occlusal trauma, such as wear facets, fractured cusps, or widened periodontal ligaments on X rays.

Grinding or clenching (bruxism) can accelerate periodontal bone loss and cause sensitivity. Identifying these functional issues allows for the recommendation of protective appliances like occlusal splints.

  • Identification of wear patterns on biting surfaces
  • Assessment of muscle tenderness in the jaw
  • Checking for fremitus (movement) upon biting
  • Evaluation of temporomandibular joint function
  • Screening for signs of nocturnal grinding

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FREQUENTLY ASKED QUESTIONS

Why does the therapist poke my gums with a ruler
  • The “ruler” is a periodontal probe. It measures the depth of the gum pocket around the tooth. This measurement tells the therapist if you have bone loss or gum inflammation, which are signs of periodontal disease.

  • That is a disclosing agent. It stains the bacterial plaque on your teeth so you can see it. It helps identify the areas you might be missing when you brush and floss.

  • X rays allow the therapist to see between the teeth and under the gums where the eye cannot see. They can detect early decay, bone loss, and infections before they cause pain or become serious.

This is a checklist used to determine your personal risk of developing cavities. It looks at your diet, hygiene, and biology to help the therapist create a prevention plan tailored to you.

  • Yes, an oral cancer screening is part of the routine examination. The therapist checks your tongue, throat, and soft tissues for any abnormal signs or lesions to ensure early detection.

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