Pulp necrosis: Is it induced by orthodontic tooth movement?


This review evaluating the evidence to support the possibility that orthodontic tooth movements could induce pulp necrosis included 12 studies. While the findings indicate there is evidence that these treatments do not induce pulp necrosis it has low to very low quality.

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Palatally Displaced Permanent Canines: Interceptive management


This review of orthodontic procedures for the management of displaced permanent canines in the mixed dentition. 5 RCTs, all at high risk of bias were identified with treatment comparisons being mainly based on single studies.

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Maxillary expansion: Bone-borne or tooth-borne approaches?


This review of bone-borne/hybrid tooth-bone-borne rapid maxillary expansion (RME) with conventional tooth-borne RME in the treatment of maxillary deficiency included 6 small RCTs suggesting some advantage for bone-borne/hybrid tooth-bone-borne appliances.

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Review suggests that both slow and rapid maxillary expansion are effective

Upper orthodontic appliance

Posterior cross-bite is a common malocclusion and a number of approaches to address this with maxillary expansion have been developed. These can be broadly divided into rapid maxillary expansion (RME) and slow maxillary expansion (SME).  The aim of this review was to compare the effectiveness of RME and SME for transverse maxillary discrepancy. Searches were [read the full story…]

Limited evidence for changes of maxillary alveolar width after surgically assisted rapid maxillary expansion


Transverse discrepancies in the maxilla can be treated by rapid maxillary expansion (RME). This is ideally carried out during the pubertal growth spurt, usually before 15 years of age. In older patients surgically assisted rapid maxillary expansion (SARME) has been used.  The aim of this review was to assess the long-term dental and skeletal changes [read the full story…]

Rapid maxillary expansion with Haas-type and Hyrax-type expanders

Upper orthodontic appliance

First described over 100 years ago, rapid maxillary expansion (RME) is a method used to correct a transverse maxillary deficiency.  The aim of this study was to evaluate and compare the immediate effects of RME in the transverse plane with Haas-type and Hyrax-type expanders by using cone-beam computed tomography. The authors randomised 33 subjects (mean [read the full story…]

Some evidence that rapid maxillary expansion improves the conditions for nasal breathing

Upper orthodontic appliance

Rapid maxillary expansion (RME) is an orthopaedic procedure that has been used in orthodontics to open the midpalatal suture in order to provide a correct and stable maxillary width.  The aim of the review was to evaluate the effects of RME on the nasal airways. The Ovid, Scirus, Scopus, Virtual Health Library, and Cochrane Library [read the full story…]

Rapid maxillary expansion and headgear, or headgear alone increases eruption success rate of palatally displaced canines

shutterstock_59108206- orthodontic headgear

The prevalence of palatally displaced permanent canine teeth varies between 0.8 and 5.2 % . The aim of this trial was to test the effectiveness of cervical pull headgear  and  rapid maxillary expansion and cervical pull headgear on the eruption of palatally displaced canines. They  randomized 64 patients with to one of three groups: cervical [read the full story…]