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Impacted Maxillary Canines: A Review
Published in Niall MH McLeod, Peter A Brennan, 50 Landmark Papers every Oral & Maxillofacial Surgeon Should Know, 2020
Alice Cameron, Serryth Colbert
Current practice continues to recognise the importance of maintaining maxillary canines, as the absence of one or more of these teeth may give rise to functional and aesthetic difficulties.1 Extraction should only be considered in the presence of resorption of the canine or adjacent incisors, significant abnormality of morphology (e.g., dilaceration), position, or ankylosis where its retention would interfere with the health or orthodontic movement of other teeth.
Benign Oral and Dental Disease
Published in John C Watkinson, Raymond W Clarke, Terry M Jones, Vinidh Paleri, Nicholas White, Tim Woolford, Head & Neck Surgery Plastic Surgery, 2018
Konrad S. Staines, Alexander Crighton
Abnormalities of tooth development and eruption may occur either as isolated defects or as part of a wider developmental disorder. Cleft lip and palate is an example of a disorder that may affect both tooth development and eruption. A discussion of other syndromes with associated craniofacial deformity and dental developmental disorders is outwith the scope of this chapter and is discussed in Volume 2, Chapter 6, The child with a syndrome. The effect of trauma may range from root dilaceration of a developing tooth or temporomandibular joint (TMJ) injury. Commonly the last tooth in each dental series may be missing or malformed, more commonly in the adult rather than the primary dentition. This is most often seen by the absence of the third molar tooth, followed by the lateral incisor and finally the second premolar. Multiple missing teeth is termed ‘hypodontia’ and requires a specialist assessment to plan for a functioning adult dentition. The commonest malformed tooth visible is the upper lateral incisor which is termed a ‘peg’ lateral incisor (Figure 42.4). Adhesive dental restorations, orthodontic tooth movement and dental implants have radically changed the outlook for patients with dental anomalies.
Removal of unerupted teeth
Published in John Dudley Langdon, Mohan Francis Patel, Robert Andrew Ord, Peter Brennan, Operative Oral and Maxillofacial Surgery, 2017
Catherine Bryant, Clare Gleeson
The surgical removal of a maxillary incisor may be indicated when its eruption has been prevented by an obstruction such as a supernumerary tooth or odontome or when trauma to the primary dentition has resulted in dilaceration of the permanent incisor which cannot be aligned. These teeth are usually accessed using a two-sided buccal flap, the distal relieving incision usually being necessary to expose the incisor which may occupy a very high position in the alveolus. The buccal bone overlying the crowns of these teeth is often very thin and its removal may be achieved with hand instrumentation. If this is not the case, a water-cooled rosehead bur can be used to expose the tooth with care being taken to avoid damage to the roots of the adjacent teeth. Once its crown is exposed, the incisor tooth can usually be elevated from the alveolus without difficulty; however, if there is a significant dilaceration of the root of the tooth, the sectioning and removal of the crown may be required to allow the elevation of the root along a different path of withdrawal (Figure 6.3).
Visibility of anatomical landmarks in the region of the mandibular third molar, a comparison between a low-dose and default protocol of CBCT
Published in Acta Odontologica Scandinavica, 2023
Josefine Cederhag, Durer Iskanderani, Per Alstergren, Xie-Qi Shi, Kristina Hellén-Halme
The study was conducted from August 2020 to May 2021 at the Department of Oral and Maxillofacial Radiology at Malmö University in Malmö, Sweden. All adult patients (≥20 years of age) referred from the Department of Oral & Maxillofacial Surgery and Oral Medicine, Malmö University, for pre-surgical mandibular third molar investigation. Indications for CBCT examination were made by a licensed radiologist and individually assessed for each patient based on anamnesis and 2D examination. The inclusion criteria were when a decision of removal had been made by oral surgeons and at least one of the conditions was met: (1) when 2D radiographic assessment could not answer the relationship between the mandibular third molar and the mandibular canal indicating close proximity; (2) if clinical and radiographic examination indicated suspicions of root resorption of the adjacent tooth; (3) suspicion of pronounced root bending or root dilaceration.
CBCT of Swedish children and adolescents at an oral and maxillofacial radiology department. A survey of requests and indications
Published in Acta Odontologica Scandinavica, 2020
Samara Hajem, Susanne Brogårdh-Roth, Mats Nilsson, Kristina Hellén-Halme
A previous study [6] found that CBCT does not always improve diagnostic accuracy compared with other imaging methods, such as panoramic imaging. Wriedt et al. [1] evaluated CBCT accuracy for indications concerning impacted ectopic canines and resorption on adjacent teeth. They concluded that small volume CBCT may be justified as a supplement to intraoral radiography when root resorption of adjacent teeth is suspected or when the canine apex is not clearly discernible in the panoramic X-ray, implying dilaceration of the canine root. Christell et al. [16] concluded that not all patients benefit from a CBCT examination if the primary outcome is a change in treatment plans. Christell et al. [16] also found no support for routine control of maxillary canine eruption disturbance.
Trauma in primary teeth and its effect on the development of permanent successors: a controlled study
Published in Acta Odontologica Scandinavica, 2019
Michele Machado Lenzi, Tatiana Kelly da Silva Fidalgo, Ronir Raggio Luiz, Lucianne Cople Maia
One unusual complication after dental trauma is root dilaceration, with one case found in our CG. Root dilaceration can occur due to idiopathic causes [15,16], and hypoplasia can be associated with genetic or environmental factors [17]; consequently, it is important that studies consider the same subject as a CG. These parallel causes were not an objective of our investigation, and can be considered a limitation of our study. More severe disturbances, such as odontoma-like malformation, sequestration of the tooth germ, and crown dilacerations, were only observed in the TG. According to Scerri et al. [11], this would indicate that these disturbances are directly correlated with TDIp.