{"id":6991,"date":"2026-08-01T00:22:20","date_gmt":"2026-07-31T14:52:20","guid":{"rendered":"https:\/\/www.drbobbychhoker.com.au\/blog\/?p=6991"},"modified":"2026-08-01T00:22:20","modified_gmt":"2026-07-31T14:52:20","slug":"types-of-wisdom-teeth-impactions","status":"publish","type":"post","link":"https:\/\/www.drbobbychhoker.com.au\/blog\/types-of-wisdom-teeth-impactions\/","title":{"rendered":"Types of Wisdom Teeth Impactions and What Their Position Means"},"content":{"rendered":"

Wisdom teeth are the final adult teeth to develop at the back of the mouth. Some erupt normally and become functional teeth. Others remain partly or completely trapped beneath the gum or within the jawbone.<\/span><\/p>\n

This is known as wisdom tooth impaction.<\/span><\/p>\n

Dentists classify impacted wisdom teeth in several ways. They may describe the direction in which the tooth is angled, how deeply it sits in the jaw and whether it has partially erupted through the gum.<\/span><\/p>\n

The classification provides a useful description of the tooth, not a treatment decision. Symptoms, surrounding anatomy, dental X-rays and the condition of the neighbouring teeth must also be considered.<\/span><\/p>\n

How wisdom tooth impactions are classified<\/b><\/h2>\n

The position of an impacted wisdom tooth is often described by comparing its angle with the second molar immediately in front of it.<\/span><\/p>\n\n\n\n\n\n\n\n\n
Type of impaction<\/b><\/td>\nDirection of the wisdom tooth<\/b><\/td>\nTypical appearance<\/b><\/td>\n<\/tr>\n
Mesioangular impaction<\/span><\/td>\nCrown tilts forwards towards the second molar<\/span><\/td>\nTooth leans into the back of the neighbouring tooth<\/span><\/td>\n<\/tr>\n
Vertical impaction<\/span><\/td>\nTooth remains relatively upright<\/span><\/td>\nLong axis is broadly parallel with the second molar<\/span><\/td>\n<\/tr>\n
Horizontal impaction<\/span><\/td>\nTooth lies almost sideways<\/span><\/td>\nCrown points towards the second molar<\/span><\/td>\n<\/tr>\n
Distoangular impaction<\/span><\/td>\nCrown tilts backwards<\/span><\/td>\nTooth angles away from the second molar<\/span><\/td>\n<\/tr>\n
Other positions<\/span><\/td>\nTooth angles towards the cheek, tongue or another direction<\/span><\/td>\nPosition falls outside the four common classifications<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

These descriptions are based on established radiographic classification methods. A <\/span>clinical and radiological study of impacted wisdom teeth<\/span><\/a> explains that angulation, eruption status, depth and surrounding anatomy may all form part of the assessment.<\/span><\/p>\n

\"Panoramic<\/p>\n

Mesioangular impaction<\/b><\/h3>\n

A mesioangular wisdom tooth tilts forwards towards the second molar. This may also be referred to more generally as a mesial impaction.<\/span><\/p>\n

Because the crown points towards the tooth in front, plaque and food can sometimes collect between the two teeth. Whether this causes a problem depends on how much of the tooth has erupted, whether the area can be cleaned and whether the neighbouring molar has been affected.<\/span><\/p>\n

A mesioangular tooth may remain completely beneath the gum or emerge only partly. Its angle alone does not mean that removal is necessary.<\/span><\/p>\n

Vertical impaction<\/b><\/h3>\n

With a vertical impaction, the wisdom tooth remains relatively upright. It may appear to be following a normal eruption path but still fail to emerge fully because there is not enough space at the back of the jaw.<\/span><\/p>\n

Some vertically impacted teeth remain symptom-free. Others partially erupt and leave a flap of gum over part of the crown, creating an area that can be difficult to clean.<\/span><\/p>\n

A vertical position should not be confused with successful eruption. The dentist still needs to assess whether there is enough space, whether the tooth can be maintained and whether the surrounding tissues are healthy.<\/span><\/p>\n

Horizontal impaction<\/b><\/h3>\n

A horizontal impacted wisdom tooth lies almost sideways within the jaw. Its crown points towards the back surface or roots of the second molar rather than towards the biting surface.<\/span><\/p>\n

This can place the wisdom tooth close to the neighbouring molar. A dental X-ray may help show whether there are signs of decay, loss of root structure, bone changes or another condition requiring attention.<\/span><\/p>\n

A horizontal position can make removal more involved in some cases, but angulation is only one consideration. Root shape, bone coverage, depth and proximity to important structures also influence treatment planning.<\/span><\/p>\n

Distoangular impaction<\/b><\/h3>\n

A distoangular wisdom tooth tilts backwards, away from the second molar.<\/span><\/p>\n

Depending on its position, it may remain fully within the jaw or partly emerge behind the gum. Cleaning access can be limited because the tooth sits at the very back of the mouth.<\/span><\/p>\n

Whether it requires attention depends on symptoms, eruption status and surrounding anatomy rather than the angle alone.<\/span><\/p>\n

Less common positions<\/b><\/h3>\n

Some wisdom teeth develop at angles that fall outside the four common classifications. They may lean towards the cheek or tongue, or develop in an inverted or otherwise unusual position.<\/span><\/p>\n

The dentist will interpret these positions alongside the tooth\u2019s depth, root shape and relationship with nearby teeth, nerves, bone and other structures.<\/span><\/p>\n

Partially and fully impacted wisdom teeth<\/b><\/h2>\n

The angle of the tooth is only one part of its classification. Dentists also consider how much of the tooth has erupted.<\/span><\/p>\n

Partially impacted wisdom tooth<\/b><\/h3>\n

A partially impacted wisdom tooth has started to emerge, but part of its crown remains covered by gum.<\/span><\/p>\n

This can leave a small pocket beneath the gum flap where plaque and food debris collect. The tissues may become inflamed, particularly when the area is difficult to reach with a toothbrush.<\/span><\/p>\n

Possible symptoms include:<\/span><\/p>\n