Third molars: risk of future extraction when retained estimated


This review of asymptomatic retained third molars included 7 prospective studies and found that the cumulative incidence for M3 extraction varied from 5 to 64% and was associated with the follow-up duration.

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Orthodontic treatment for crowding: review found similar results with early and late extractions


This new review looks at early or late premolar extraction for the orthodontic treatment of severe crowding. However, only seven retrospective studies are available so it is difficult to assess which protocol is more effective.

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No reliable evidence of benefit from extracting primary canine teeth for correcting poorly aligned permanent canines

shutterstock_8524240-unerupted canines

In a small proportion of children (1-3%) the upper permanent canine tooth is diverted into the roof on the mouth.  Treatment of this displacement can be complex and it is considered that the early removal of the primary canine tooth may improve the position f the developing permanent successor. The aim of this Cochrane review [read the full story…]

Moderate evidence that chlorhexidine rinse or gel provides a benefit in preventing dry socket


Teeth are extracted every day in dental surgeries throughout the world because of tooth decay and periodontal (gum) disease. Alveolar osteitis (dry socket) is a complication that can follow an extraction with estimates of its incidence ranging from <1-37.5%.  Typically a blood clot is absent in the socket and the patients have pain in and [read the full story…]

Intravenous bisphosphonates and osteonecrosis of the jaw


Bisphosphonates (BPs) are used for the treatment of a range of bone problems, e.g., osteoporosis, or bone metastases of malignant cancer. In 2003 the condition of bisphosphonate related osteonecrosis of the jaw (BONJ) was reported.  The aim of this retrospective cohort study was to estimate the cumulative incidence and risk ratio for ONJ (osteonecrosis of [read the full story…]

Limited evidence supports some clinical benefit of alveolar ridge preservation procedures


Alveolar bone remodelling follows tooth extraction and traumatic extraction is associated with additional bone loss. Prior to extraction periodontal disease, periapical pathology and mechanical trauma can also lead to loss of bone. In order to maintain a good alveolar ridge a range for preservation procedures have been investigated. The aim of this review was to [read the full story…]

Some limited evidence to support the use of chlorhexidine to prevent dry socket


Dry socket (alveolar osteitis) socket is a painful complication of  tooth extraction that occurs in about  5%  of  extractions of permanent tooth. It is more common following the extraction of wisdom teeth. That aim of this review was to assess whether chlorhexidine, when compared to placebo and/or other interventions, reduced the incidence of alveolar osteitis [read the full story…]

Coronectomy or total removal of third molars which approach give better outcomes


One of the complications of the removal of lower third molars ( wisdom teeth) is inferior alveolar nerve injury (IANI) .  This has resulted in the use of a new extraction procedure coronectomy (partial odontectomy or root retention) a technique whereby the crown of a tooth is removed but parts of the roots are untouched.  [read the full story…]

Still insufficient evidence to support or refute routine prophylactic removal of asymptomatic impacted wisdom teeth

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Third molars (wisdom teeth) generally erupt between the ages of 17-24 years. Often they fail to erupt or only erupt partially. When they do not reach their normal functional position they are considered to be impacted, this can be due to lack of space, obstruction by another tooth, or development in an abnormal position.   An [read the full story…]

Changes to the mouth following tooth extraction


Tooth extraction is the most common surgical procedure and is associated with changes to the supporting structures. The aim of this review was to assess the magnitude of dimensional change of both the hard and soft tissues of the alveolar ridges after tooth extraction. The Medline and Cochrane Central databases were searched and a selection [read the full story…]