Postmortem Dental Examination and Autopsy Protocol

How the postmortem dental examination is conducted at autopsy: accessing the dentition, resection techniques, radiography, documentation standards, and special considerations for decomposed and burned remains.

Last updated: 9 Jun 2026

The postmortem dental examination is the physical event at the centre of dental identification. Everything that follows, the comparison, the conclusion, the identification, depends on the quality of what is documented here. A systematic approach under proper conditions produces a chart and a radiograph series that can be compared against antemortem records with confidence. A hurried or incomplete examination can introduce errors that are impossible to correct once the remains are released.

The examination is conducted within the autopsy context, which means the forensic odontologist works alongside or after the pathologist, follows the mortuary's protocols for access and documentation, and must sometimes examine remains that present significant practical challenges: advanced decomposition, heat damage, fragmentation, or submersion.

This topic covers the standard protocol for accessing the dentition, the indications for jaw resection, how radiographs are obtained from a body on an autopsy table, what the documentation should contain, and how the examination adapts for decomposed and burned remains. These are the practical skills that separate a forensic odontologist who can deliver reliable casework from one who cannot.

Key terms

Jaw resection: Surgical removal of the mandible and/or maxillary alveolus from the body to allow better radiographic positioning and more thorough examination. An irreversible procedure requiring documented justification and pathologist authorisation.
Full-mouth periapical series: A set of dental radiographs covering all teeth from root apex to crown, typically 14 to 20 individual images, capturing the format most often found in antemortem dental records.
Orthopantomogram (OPG/panoramic): A single wide-field radiograph capturing all teeth, both jaws, and the surrounding bone in one image. Produced by a rotating X-ray source and sensor. Useful as an overview but lacks the detail of periapical views.
Calcination: The conversion of organic tooth and bone material to calcium phosphate mineral through intense heat (typically above 700 degrees Celsius). Calcined remains are white and extremely fragile.
Alveolar socket: The bony cavity in the jaw that holds a tooth root. Its condition (fresh, healing, or fully remodelled) indicates when a tooth was lost relative to death.
Dental crazing: A network of fine surface fractures in tooth enamel produced by rapid heating and cooling. A characteristic fire-damage pattern that must be distinguished from antemortem enamel defects.

Setting up and accessing the dentition

Preparation before you touch a tooth saves errors you cannot undo.

The postmortem dental examination begins with review of the case history and any preliminary identification information before the examiner approaches the remains. Knowing the proposed identity, the approximate age, and the circumstances of death allows the examiner to anticipate what they are likely to find and to direct the examination efficiently.

Access to the dentition is straightforward in fresh remains: the lips and cheeks are retracted with dental mirrors or mouth props, and the oral cavity is examined systematically. When rigor mortis is present, a mouth prop inserted gradually will achieve enough opening for examination and radiography without forcing the jaw. Forced opening of a rigored jaw risks fracture and is unnecessary.

Equipment: dental mirror, probe, and explorer; a portable or wall-mounted dental X-ray unit with periapical film or digital sensor; a bitewing tab or positioning device; a camera for clinical photographs; and a portable light source. A standard dental chart form using the chosen notation system.
Sequence: clinical photograph the oral cavity before disturbing anything. Document teeth present and their general condition. Record restorations, surface by surface, for each tooth. Then proceed to radiography. Photograph again after radiography if any manipulation has been performed.
Chain of custody: if any teeth are removed for examination, each is bagged, labelled with tooth number, case reference, and date, and signed into the evidence record. A loose tooth found in the oral cavity or on the body surface is treated as potential evidence before it is treated as a dental specimen.

Jaw resection: indications, technique, and documentation

Resection is irreversible; the decision must be justified before the cut.

In most cases the dentition can be adequately examined and radiographed without removing the jaws from the body. Resection becomes necessary when decomposition has advanced to the point where tissue prevents adequate access, when fire damage has contracted surrounding tissue so severely that the oral cavity cannot be opened, or when radiographic quality from the intact body is insufficient for comparison purposes.

The procedure is performed with surgical saws, chisels, and rongeurs, removing the mandible and if necessary the maxillary alveolus as surgical blocks that can then be positioned optimally for radiography. The body is restored as far as possible after the examination, and the resected structures are preserved in the case material. Written justification for resection and pathologist authorisation should be documented in the case record before the procedure begins.

Jaw resection decision pathway.

Radiography at autopsy

A radiograph series taken today will be compared with one taken years ago.

The goal of postmortem dental radiography is to produce images that can be directly compared with antemortem radiographs. This means using the same formats where possible: periapical images for individual tooth and root detail, bitewing views for interproximal contact and bone height, and a panoramic image as an overview. Where the AM records consist only of panoramic images, postmortem panoramic radiography is the priority.

Positioning for postmortem radiography is more difficult than in a clinical setting because the patient cannot cooperate. Film or sensor holders must be adapted, and exposure settings adjusted for the tissue overlying the teeth. In unresected remains, the X-ray tube is brought to the body; in resected blocks, the blocks can be positioned freely on a bench or a standard dental film holder, which typically produces better image geometry.

Decomposed and skeletonised remains

Decomposition changes the work, not the standard.

Decomposed remains present the most variable and demanding examination conditions. Early decomposition, within a few weeks in a temperate climate, typically allows examination after soft tissue removal or dissection. Advanced decomposition or skeletonisation means the odontologist works with dry or nearly-dry dental structures, often with loose teeth that have separated from the sockets.

Tooth stability: in decomposed remains, periodontal ligament breakdown means teeth may be loose or absent. Each tooth found loose or separated must be documented in relation to where it was recovered. An upper-right molar found in the oral cavity should be assigned to its socket before the chart is written.
Socket assessment: the condition of an empty socket indicates when the tooth was lost. A fresh socket with sharp margins and no bone remodelling suggests perimortem or postmortem loss. A smooth-walled, partially remodelled socket suggests antemortem loss months to years before death. This distinction is critical for comparing against AM records.
Maceration: simmering heavily decomposed material in water removes residual soft tissue and allows cleaner examination and better radiographic images. The process must be temperature-controlled to avoid damage to tooth structure and bone.
Radiographic positioning: individual loose teeth can be positioned in wax or putty for periapical radiography. The image format is the same as an AM periapical, allowing direct overlay comparison.

Burned and heat-damaged remains

Fire is among the worst conditions for forensic examination, and among the most common.

Teeth are among the most heat-resistant tissues in the body. Dental enamel survives temperatures that incinerate bone, and this is one of the reasons dental identification is so frequently attempted in fire deaths, aircraft accidents, and large-scale disasters involving fire. But heat does change dental structures in ways the examiner must understand.

Temperature range (approximate)	Effect on tooth	Identification implication
Below 200 degrees C	Minor discolouration, surface checking	Minimal; most features preserved
200-400 degrees C	Crazing of enamel, carbonisation of organic material, colour darkening	Features readable but fragile; handle with care
400-700 degrees C	Enamel fracture, dentine exposure, significant contraction	Some features may be lost; radiography more important than visual exam
Above 700 degrees C	Calcination: white, brittle, chalky fragments	Restoration material may survive; gross morphology is the main remaining data

Handling burned teeth requires extreme care. Calcined teeth fracture when handled and must be supported or stabilised with consolidants before they can be moved. Radiography should be attempted before any manipulation. Photographs documenting the in-situ state before any handling are essential and cannot be recreated afterwards.

Documentation standards for the PM examination

The case record is the examination, once the remains are no longer available.

The postmortem dental examination produces a case record that must be complete, internally consistent, and signed. It will be reviewed by a second odontologist, may be subject to legal challenge, and will be retained as part of the permanent investigative record. The standard output includes:

Dental chart: completed in a standardised notation system (FDI preferred in international work), noting each tooth present, each tooth absent with socket condition, all restorations with surface and material, and any pathology or distinctive features.
Radiographic series: labelled with case reference, tooth designation, and date. Digital files stored in DICOM or equivalent format. Film radiographs mounted and labelled.
Photographs: pre-examination intraoral overview, close-up photographs of distinctive features, and post-manipulation photographs if any teeth were moved during examination. Photographs are date-stamped and included in the case file.
Narrative report: describing examination conditions, any special procedures (resection, maceration), significant findings, and any limitations that affected the examination.

INTERPOL DVI standards specify the yellow PM form as the international data collection instrument for postmortem dental findings. Where this form is used, the case record must also include the completed yellow form. Consistency with international standards allows PM data to be compared against AM data collected by a team in another country working from INTERPOL pink forms.

Worked example

Examining a body recovered from submersion after six weeks

Advanced decomposition with adipocere formation: what survives and how to work with it.

A body is recovered from a lake after approximately six weeks of submersion. External features are unrecognisable. Adipocere, a waxy substance produced by the saponification of body fat in anaerobic conditions, has formed extensively across the face and oral region. Fingerprints are not recoverable. The pathologist requests a dental examination as the primary identification method.

Gaining access. Adipocere and residual soft tissue are carefully dissected away from the oral cavity. The dissection uses a scalpel, working inward from the lips, to expose the dental arch without disturbing tooth position. An overriding concern is to identify loose teeth before they are inadvertently displaced.
Initial photograph and visual examination. The oral cavity is photographed before any further manipulation. A clinical chart is begun. Twenty-two teeth are present; three are loose in their sockets but in correct anatomical position. Two sockets are empty with smooth, remodelled walls, consistent with antemortem extractions. Restorations are visible on several teeth.
Radiography. A portable X-ray unit is brought to the examination table. Periapical films are taken for all four quadrants and bitewing images for the posterior teeth. Image quality is reduced by the tissue surrounding the jaws; resection is considered but the pathologist and odontologist agree the existing images are adequate for comparison purposes given the number of distinctive restorations visible.
Comparison. AM records are obtained two days later from the proposed individual's dentist. The comparison shows seven concordant features including a distinctive MOD amalgam on the lower-left first molar and a characteristic distal root curvature on the upper-right second premolar visible in both the AM and PM periapical images. The two empty sockets match documented extractions in the AM chart. No unexplained discordances. A positive identification is reached and confirmed by a second examiner.

The key decisions in this case were the choice not to resect (which preserved the body's integrity without sacrificing image quality) and the careful dissection that avoided displacing the loose teeth before they could be charted in position. Both decisions reflect the core principle that the examination must be as complete as possible while being as conservative as the circumstances allow.

Check your understanding

Question 1 of 4· 0 answered

Under what conditions is jaw resection indicated in a postmortem dental examination?

Key Takeaways

The postmortem dental examination follows a consistent sequence: review case history, photograph before manipulation, chart systematically, radiograph, and produce a complete signed case record.
Jaw resection is an irreversible step requiring documented justification and pathologist authorisation; it is performed only when intact examination cannot provide adequate access or imaging quality.
Postmortem radiography aims to replicate the format of AM radiographs, using periapical, bitewing, and panoramic views, to enable direct image comparison.
Socket condition in decomposed remains indicates timing of tooth loss: fresh sockets suggest perimortem or postmortem loss, while remodelled sockets confirm antemortem extraction.
Burned teeth require consolidation before handling; calcination begins above 700 degrees Celsius; restoration material survival depends on material type and temperature.

When is jaw resection necessary in a postmortem dental examination?

Resection is performed when the remains are in a condition that prevents adequate access with the body intact: severe decomposition, skeletonisation, fire damage with significant charring, or when imaging quality from intact remains is insufficient for comparison purposes. It allows better radiographic positioning and more thorough charting, but it is an irreversible step requiring pathologist authorisation and documented justification.

What radiographic views are taken during a postmortem dental examination?

The minimum standard is a full-mouth periapical series supplemented by bitewing views. A panoramic radiograph is taken where equipment is available. Cone beam CT is used in specialist settings where three-dimensional data are needed. The goal is to replicate the format of antemortem radiographs as closely as possible to facilitate direct comparison.

How does decomposition affect the postmortem dental examination?

In early decomposition, soft tissue removal is often needed to access the dental structures. In advanced decomposition or skeletonisation, teeth may be loose or absent from their sockets. Positioning for radiography becomes more challenging and may require individual tooth mounting. Charting must note the condition of sockets to distinguish antemortem tooth loss from perimortem or postmortem avulsion.

What special steps apply when examining burned remains?

Burned teeth are fragile and require gentle handling to prevent fracture during examination. Radiography must be attempted before any manipulation. Heat produces characteristic fracture patterns that must be distinguished from antemortem pathology. The colour and degree of calcination help estimate burn temperature. Porcelain crowns and glass-ionomer restorations may fracture or change appearance under heat, complicating comparison.

What documentation is produced by the postmortem dental examination?

The standard output is a written dental chart using a recognised notation system, a full radiographic series, clinical photographs, and a case narrative describing examination conditions and findings. All items are signed and dated by the examining odontologist and form part of the official autopsy record. Chain of custody for any teeth removed must be documented.

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Temperature range (approximate)

Effect on tooth

Identification implication

Below 200 degrees C

Minor discolouration, surface checking

Minimal; most features preserved

200-400 degrees C

Crazing of enamel, carbonisation of organic material, colour darkening

Features readable but fragile; handle with care

400-700 degrees C

Enamel fracture, dentine exposure, significant contraction

Some features may be lost; radiography more important than visual exam

Above 700 degrees C

Calcination: white, brittle, chalky fragments

Restoration material may survive; gross morphology is the main remaining data

Key Takeaways

The postmortem dental examination follows a consistent sequence: review case history, photograph before manipulation, chart systematically, radiograph, and produce a complete signed case record.

Jaw resection is an irreversible step requiring documented justification and pathologist authorisation; it is performed only when intact examination cannot provide adequate access or imaging quality.

Postmortem radiography aims to replicate the format of AM radiographs, using periapical, bitewing, and panoramic views, to enable direct image comparison.

Socket condition in decomposed remains indicates timing of tooth loss: fresh sockets suggest perimortem or postmortem loss, while remodelled sockets confirm antemortem extraction.

Burned teeth require consolidation before handling; calcination begins above 700 degrees Celsius; restoration material survival depends on material type and temperature.

When is jaw resection necessary in a postmortem dental examination?

What radiographic views are taken during a postmortem dental examination?

How does decomposition affect the postmortem dental examination?

What special steps apply when examining burned remains?

What documentation is produced by the postmortem dental examination?

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Key Takeaways

Key Takeaways