Endodontic retreatment: Surgical or non-surgical approach?

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20 RCTs are included in this Cochrane review update of endodontic retreatment. The available evidence is of low quality so further research is needed to understand the effects of surgical versus non-surgical approaches, and to determine which surgical procedures provide the best results.

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Obstructive sleep apnoea: insufficient evidence for oral appliances in children

What other effects do nightmares and parasomnias have on sleep that could explain the association with future psychotic symptoms?

This Cochrane review to assess the effects of oral appliances or functional orthopaedic appliances for obstructive sleep apnoea in children only identified a single small trial which provided insufficient evidence to assess effectiveness.

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Distraction osteogenesis or orthognathic surgery for hypoplastic maxilla in cleft lip and palate


This Cochrane review of maxillary distraction osteogenesis compared to orthognathic surgery for the treatment of hypoplastic maxilla in people with cleft lip and palate only identified a single small trial providing very low quality evidence. Further high quality research is needed.

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Oral Health in nursing homes: education for staff and residents

All the evidence relates to care homes and there is hardly any evidence for any other setting.

9 trials were included in this Cochrane review of oral health education & training for care home residents & staff . These trials provided insufficient evidence from which to draw evidence about the effects of the interventions so more high quality studies are needed.

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Preformed paediatric crowns: little evidence for aesthetic crowns


Only 7 small studies at high risk of bias were available for this review of preformed paediatric aesthetic crowns. They provide little evidence on which to r change of practice particular for posterior teeth where the use of stainless steel crowns is recommended.

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Rubber Dam use may increase restoration survival time


Only 4 studies were included in the Cochrane review of the impact of rubber dam isolation on dental restorations. The findings suggest that using rubber dam may results in lower failure rates

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Do analgesics before dental treatment reduce post treatment pain in children?


This Cochrane review found 5 RCTs of pre-op analgesics prior to dental treatment for children under local anaesthetic. The evidence as insufficient to determine a benefit but there may be a benefit prior to orthodontic band placement. Further high quality studies are needed.

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Third molar removal: antibiotics reduced risk of dry socket


This review of antibiotic prophylaxis for the removal of third molars included 22 RCTs and suggest that antibiotic use lowered the infection risk by 60%. The number pf patients needed to treat to prevent one infection was 14 (95%CI;11-19).

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Oral leukoplakia: very limited evidence for treatments


The aim of this Cochrane review was to assess the effectiveness, safety and acceptability of treatments for oral leukoplakia in preventing oral cancer.

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Fluoride mouthrinse: regular supervised use reduces tooth decay in children


This Cochrane review includes 37 RCTs and found regular supervised use of fluoride mouthrinse by children and adolescents is associated with a large reduction in caries increment in permanent teeth.

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