• Journal of the korean academy of Pediatric Dentistry
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• v.28 no.1
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• pp.67-71
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• 2001

A cyst that develops in children's jaw occasionally disturbs the eruption of the succedaneous teeth. These teeth, however, usually have the potential of eruption. So, if the obstacles to eruption are eliminated, it is possible that the teeth erupt spontaneously to their normal position. In those cases, it usually requires the management of the cyst and the eruption guidance of the displaced teeth. Many surgical procedures have been described for the elimination of cysts. When the cyst is large and displaces the permanent teeth, marsupializaion is a surgical technique that may be preferred to enucleation in treatment of cysts. In marsupializaion, if the opening is maintained properly, it may be possible to manage the cyst and guide the displaced teeth into the normal position. In these cases, the cysts were managed with marsupialization in concomittent application of acrylic obturators, and as a result the displaced permanent teeth were guided into normal position. Even though the etiologic factors of the two cases are different, the treatment was the same. And both cases show that the potential for heal ing is remarkable with spontaneous relocation of displaced tooth, provided the opening is maintained during the eruption of the permanent tooth.

• Journal of the korean academy of Pediatric Dentistry
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• v.34 no.4
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• pp.694-699
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• 2007

Delayed tooth eruption is the most commonly encountered deviation from normal eruption time. Racial, ethnic, sexual, and individual factors can influence eruption and are usually considered in determining the standards of normal eruption. Delayed tooth eruption was affect to the dentition and facial growth, so that when it occurred careful evaluation should be performed to establish the cause and the treatment plan accordingly. Present 3 cases of delayed tooth eruption by periapical lesion, underdevelopment of incisior and compound odontoma were successfully treated. In these cases, we could observe spontaneous eruption of the delayed erupting tooth after removal of interrupting factor and space regaining with maintaining.

• Journal of the korean academy of Pediatric Dentistry
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• v.31 no.1
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• pp.34-40
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• 2004

Unerupted maxillary anterior teeth is not a common case, However it may present practitioners with management problem. The cause of impaction is considered to be multifactorial, and local cause is the most common. These impacted teeth require surgical intervention, removal, transplantation, or surgical exposure, with or without orthodontic traction to align the malpositioned tooth. The preferred option is surgical exposure and orthodontic correction. Surgical intervention and orthodontic correction should not be delayed to avoid unnecessary difficulties in aligning the tooth in the arch. Surgical exposure should be performed with the intent of providing sufficient attached gingiva rather than simply uncovering the crown, which results in only alveolar mucosal attachment. Attached gingiva is essential to secure the gingival tissues to the adjacent teeth at the dentogingival junction. Thus preventing loss of periodontal tissues as a result of the pull of the surrounding soft tissues and facial muscles. Labially impacted maxillary anterior teeth uncovered with an apically positioned flap technique have more un- esthetic sequelae than those uncovered with a closed-eruption technique. In the case of severly displaced impacted teeth, autotransplantation ensures preservation of the alveolar bone and will facilitate future placement of an osseointegrated implant once growth has ceased or if ankylosis/resorption of the transplant occurs.

• Journal of the korean academy of Pediatric Dentistry
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• v.28 no.2
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• pp.281-286
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• 2001

The treatment method of impacted tooth is various from simple observation to surgical exposure and orthodontic methods, autotransplantation is concerned to severe malposed impacted tooth. Autotransplantation is the transplantation of embedded, impacted, of unerupted tooth, into extraction socket of surgically prepared in the same individual. Autotransplantation of tooth with $\frac{1}{2}{\sim}\frac{3}{4}$ root development provides a good chance of easily extracted, a little complication, pulp survival, and complete root formation. Transplantation of uncompleted root apex tooth is aim to pulpal healing, not endodontic treatment. The case which were treated with autotransplantation is reported, and induced normal physiologic eruption and good dental alignment.

• Journal of the korean academy of Pediatric Dentistry
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• v.34 no.2
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• pp.335-340
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• 2007

Primary teeth and the permanent successor must be understood as interdependent units, where each one of them interacts with and depends upon the other. The spread of pulpal inflammation in primary teeth to the periradicular tissues can lead to early eruption, enamel hypoplasia or hypocalcification, developmental arrest of permanent successor. Also the periapical inflammation cause permanent tooth displacement in various direction. We describe here two clinical cases of displaced permanent successor caused by periapical lesion of mandibular primary molar in children.

• Journal of the korean academy of Pediatric Dentistry
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• v.47 no.2
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• pp.219-227
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• 2020

Tooth eruption involves a complex developmental process of tooth migration from the dental follicular origin to the final occlusion position in the oral cavity via the alveolar process. Disturbance of tooth eruption can occur at any point in a series of eruption stages; however, horizontal impaction of the mandibular first molar and primary retention of the primary mandibular second molar are rarely observed simultaneously. This study describes the treatment for two cases of horizontally impacted first molar with primary retention of primary molar. The primary retention of the primary mandibular second molar was extracted, and orthodontic traction was applied to the horizontally impacted primary mandibular first molar. Subsequently, displacement of the premolar tooth bud was improved and space regaining for eruption was achieved, guiding to normal eruption of the first molar.

• Journal of the korean academy of Pediatric Dentistry
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• v.31 no.3
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• pp.355-361
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• 2004

Impaction is generally defined as the lack of eruption of a tooth after the normal age for the eruption. An impacted tooth may appear blocked by another tooth, bone, or soft tissue, but cause of tooth impaction is often unknown. The clinician should consider the various treatment options available : (a) No treatment and observation, (b) surgical exposure and orthodontic traction (c) auto transplantation (d) extraction. These cases were about the patients with delayed eruption of maxillary central incisor. We surgically exposed impacted tooth and guided it into normal position by the orthodontic traction. Especially, in case 1, #21 was ectopic impacted state with root dilaceration. It is required to examine further root development and alignment of dentition serially.

• Journal of the korean academy of Pediatric Dentistry
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• v.38 no.1
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• pp.82-87
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• 2011

The pulp infection of primary tooth is often caused by dental caries or trauma. But, if it is not managed properly, it can be produce the periapical lesion. The periapical lesion can cause some complications such as enamel hypoplasia, displacement, root dilaceration and impaction. Treatment options of displaced permanent successor are clinical and radiological follow-up after extraction of primary teeth, surgical opening, orthodontic traction, transplantation and extraction. In these cases, the premolars with abnormal eruption path caused by periapical lesion of the primary tooth have shown successful spontaneous eruption just as a result of extraction of infected primary tooth and space maintenance.

• Journal of the korean academy of Pediatric Dentistry
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• v.31 no.3
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• pp.406-411
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• 2004

Inverted Impaction of the permanent maxillary central incisor is rare. The causes of impaction are trauma and periapical inflammation of primary maxillary incisor teeth. Treatment options for a inverted incisor is extraction, surgery and orthodontic traction, transplantation, and spontaneous eruption guidance. Treatment depends on the incisor's root development and the space available for eruption. If root development is immature, prognosis would be good. We reported successful treatment for inverted maxially central incisor of proper eruption and normal root development by correction of a eruption route. But further observation will be required to evaluate the final root development state and amount of at tachment gingiva.

• Journal of the korean academy of Pediatric Dentistry
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• v.31 no.4
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• pp.598-604
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• 2004

Impaction of mandibular first molar is relatively rare and its overall frequency has been reported to be 0.01%. The etiology of impaction are lack of eruption space, physical obstacles such as supernumerary teeth, odontomas or odontogenic tumors, hereditary factors, functional disturbances of endocrine glands and traumas. Impaction of mandibular first molar can result in a short lower facial height, formation of a follicular cyst, pericoronal inflammation, resorption of the roots of neighboring teeth and malocclusion. The treatment options available for impacted teeth include surgical exposure, orthodontic forced eruption, surgical repositioning and surgical removal of unerupted molar. This report presents two cases of distally tilted and impacted mandibular first molars which were treated by surgical exposure. In these cases, we could observe spontaneous eruption of the impacted mandibular first molars after surgical exposure.