Orthodontics

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How to Correct a Transverse Posterior Crossbite with Dr. David Kennedy

Dr. David Kennedy, orthodontist, at the faculty of dentistry at UBC spoke with Dr. Chiraz Guessaier about the correction of transverse posterior crossbites. Access the PPT Presentation of this video (PDF) Highlights In patients with posterior crossbites, early treatment will frequently permanently correct the condition. A posterior crossbite with a functional shift left untreated can lead to some adaptive growth changes. Additionally, managing this condition later on is often more difficult to treat. The most common posterior crossbite is one in which there is a unilateral presentation and there is a functional shift of the mandible. This constitutes ~80-90% of ...

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How to correct a non-skeletal anterior crossbite with Dr. David Kennedy

Dr. Chiraz Guessaier spoke to Dr. David Kennedy, Clinical Professor and Co-clinical Director of the graduate orthodontics program at the Faculty of Dentistry, UBC, about the pertinence of early orthodontic treatment to correct a non-skeletal anterior crossbite. Access the PPT Presentation of this video (PDF) Highlights Correction of non-skeletal anterior crossbites are fairly easy to recognize and can be treated successfully. In order to determine if early orthodontic intervention is required, the clinician can ask him/herself 3 questions: If I treat this condition now, will I still have more to do at a later date? If I don’t treat this ...

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How does orthodontic tooth movement impact endodontic treatment and the outcome?

Teeth undergoing orthodontic tooth movement may require endodontic treatment which could be related or unrelated to orthodontic treatment. However, it is always preferable to try to foresee and treat the tooth endodontically prior to beginning orthodontics for some of the following reasons: Pulpal or periradicular pain can be masked by discomfort associated with that of tooth movement. Once fixed appliances are placed on teeth, rubber dam isolation can be difficult. Creating endodontic access preparations can be confusing as the long axis of the tooth may be difficult to determine. Working lengths or finding apical stops may be compromised by root ...

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Do I have to treat a discoloured primary tooth?

When a primary tooth discolours and turns grayish, it is usually secondary to a traumatic episode. The discolouration indicates a necrotic pulp or that hemorrhaging has occurred and entered the dentinal tubules and can appear within a month of the original injury. The tooth may exhibit a light gray colour initially but may progressively darken. Occasionally, the tooth may present with a yellowish colour due to calcific degeneration of the pulpal tissues. Treatment of these teeth is not always indicated unless there is evidence of pathology. As such, appropriate examination and follow-up is necessary in these cases. Source: Dental Secrets, ...

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What are the factors affecting prognosis and treatment duration for impacted central incisors?

This summary is based on the article published in the American Journal of Orthodontics & Dentofacial Orthopedics: Impacted central incisors: Factors affecting prognosis and treatment duration (May 2015) Stella Chaushu, Tal Becker, and Adrian Becker Context Although the prevalence of non-eruption or impaction of the maxillary central incisor is low, its occurrence is disfiguring for a young child and of considerable concern to the parents. The causes of this phenomenon can be divided into 2 main groups: obstructive and traumatic causes. Purpose of the Study To assess the patient and treatment factors that influence the success rate and the duration ...

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What are the effects of surgical anchorage techniques compared to conventional anchorage in preventing unwanted tooth movement in orthodontic treatment?

This summary is based on the Cochrane Oral Health Group review: Reinforcement of anchorage during orthodontic brace treatment with implants or other surgical methods (August 2014) Safa Jambi, Tanya Walsh, Jonathan Sandler, Philip E Benson, Richard M Skeggs, Kevin D O’Brien Context Orthodontic treatment is used to correct crooked or sticking out teeth by moving the affected teeth into the correct position. The teeth are straightened by using a brace. Sometimes unwanted movement of other teeth is caused by the use of a brace and this is controlled by what is known as anchorage, or methods for stabilizing these teeth. ...

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What are the effects of orthodontic treatment for class II malocclusion in children?

This summary is based on the Cochrane Oral Health Group review: Orthodontic treatment for prominent upper front teeth (Class II malocclusion) in children (November 2013) Badri Thiruvenkatachari, Jayne E Harrison, Helen V Worthington, Kevin D O’Brien Context Prominent upper front teeth are a common problem affecting about a quarter of 12-year old children in the UK. The correction of this condition is one of the most common treatments performed by orthodontists. This condition develops when the child’s permanent teeth erupt and children are often referred to an orthodontist for treatment with dental braces to reduce the prominence of the teeth. ...

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What are the effects of orthodontic treatment for posterior crossbites?

This summary is based on the Cochrane Oral Health Group review: Orthodontic treatment for posterior crossbites (August 2014) Paola Agostino, Alessandro Ugolini, Alessio Signori, Armando Silvestrini-Biavati, Jayne E Harrison, Philip Riley   Context A posterior crossbite occurs when the top back teeth bite inside the bottom back teeth. It occurs when the top teeth or jaw are narrower than the bottom teeth and can happen on one or both sides of the mouth. The condition affects between 1% and 16% of children who only have their baby teeth. Most posterior crossbites (50% to 90%) remain even when the permanent teeth ...

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