What does “Cephalometric analysis” mean?
Cephalometric analysis measures and interprets relationships between landmarks and lines on a skull radiograph to assess the jaws and teeth. It supports orthodontic diagnosis and planning, and comparison of growth or changes before and after treatment. Taking the radiograph and analysing it are separate steps.
Use landmarks to interpret relationships
Landmarks of the jaws and teeth are identified on the radiograph and their relationships analysed. Interpretation depends on landmark placement and the analysis used. Rather than diagnosing yourself from a results table, ask what it means for your bite and treatment goals.
Combine analysis with examination and other records
Cephalometric analysis is one source of information about the teeth and jaws. It is interpreted alongside examination of the mouth and face, tooth alignment and gum health, and any necessary photographs or models. One image or reference value cannot replace all treatment decisions.
Comparison and growth prediction have limitations
Images from different stages can be superimposed to assess changes associated with growth and treatment. The comparison method and image quality matter, and an individual's growth cannot be predicted with certainty. Further imaging is selected according to the clinical question and existing records.
Frequently Asked Questions
Does a measurement outside the reference range mean I need surgery?
No. Measurements must be assessed alongside the actual bite, function, growth status and goals before treatment options are explained.
Does everyone need a CT scan for accurate analysis?
No. First consider what information is needed and whether existing images can answer the question. Additional tests such as CBCT are selected according to clinical need and radiation exposure.
Checking the interpretation and comparison of cephalometric findings
Learn what the term means and how it relates to your dental condition.
- Sufficient understanding
What question does this analysis answer in my treatment plan?
Explanation and evidenceAsk how the jaw and tooth relationships relate to the examination findings, and what a particular measurement means for the goals and options.
RCS and British Orthodontic Society: Training standards for cephalometric analysis, growth prediction and diagnosis (2025) - A choice suited to your condition
How should growth and changes before and after treatment be interpreted?
Explanation and evidenceDiscuss the conditions for comparing images and landmarks, interpretation of change, limits of growth prediction and reasons for any additional records.
RCS and British Orthodontic Society: Training standards for cephalometric analysis, growth prediction and diagnosis (2025)
Further reading and references
Further reading
References
- RCS and British Orthodontic Society: Training standards for cephalometric analysis, growth prediction and diagnosis (2025)rcseng.ac.uk (opens in a new tab)
- AAPD: Diagnosis and staged management of developing dentition and occlusion (2024 revision)aapd.org (opens in a new tab)
- US FDA: Clinical need, image selection and radiation considerations for dental CBCTfda.gov (opens in a new tab)
