Trauma to the primary dentition and its sequelae

Ranka, Meena; Dhaliwal, Harmeet; Albadri, Sondos; Brown, Catriona J.

doi:10.12968/denu.2013.40.7.534

Cited by 18 publications

(25 citation statements)

References 15 publications

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“…The highest prevalence of subluxation is due to the small thickness and the density of the alveolar bone, therefore younger children are more likely to be affected by luxation than by fracture of the dental tissue, which corroborates the findings from previous studies (11)(12)(13)(14). In this study, and in most studies in this field, the enamel hypoplasia is a common sequela in the permanent successors (7,9,15). This is the major consequence of trauma in primary teeth of children aged 1 to 4 years, a period when the permanent successor crown is in the initial formation phase, Nolla's dental developmental stages 1-5 (16).…”

Section: Discussionsupporting

confidence: 52%

“…The severity of the sequelae depends on the child's age at the time of injury, the amount of root resorption of the traumatized tooth, the type and extent of the injury and the successor's development phase at the time of injury. The types of trauma that most affect the permanent successors are intrusion and avulsion of the primary tooth (4)(5)(6)(7)(8).…”

Section: Introductionmentioning

confidence: 99%

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Association between Trauma to Primary Incisors and Crown Alterations in Permanent Successors

2014

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The aim of this study was to determine the prevalence of sequelae in permanent teeth that had their predecessors traumatized and investigate associated factors. The study was carried out with clinical and radiographic data from 137 patient charts of the Traumatized Patient Care Program, Federal University of Santa Catarina (Brazil), totalizing 253 teeth. Data were gathered on gender, age at the time of trauma, type of trauma, type of post-trauma sequelae, trauma recurrence and crown alteration in the permanent successors. No statistically significant associations were found between permanent successor's crown alteration and gender, age at the time of trauma, post-trauma sequelae or trauma recurrence (p>0.05). Significant associations were found between severe trauma (crown fracture with pulp exposure, lateral luxation, intrusion and extrusion) in the primary incisors and permanent successor's crown alteration (p<0.05). Multivariate analysis revealed an association between severe trauma to the primary incisors and permanent successor's crown alteration (OR: 4.1 - IC: 1.7-10.1). Alterations in the crown of permanent successors are associated with severe trauma to the primary incisors, as primary teeth affected by severe trauma have a fourfold greater chance of exhibiting permanent successor crown alteration in comparison to primary teeth that had minor trauma.

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Section: Discussionsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Association between Trauma to Primary Incisors and Crown Alterations in Permanent Successors

2014

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“…대부분의 연구에서 외상성 손상을 가장 많이 받는 치아는 유 Table 6. Distribution of treatment type for permanent teeth according to injury type and time elapsed since injury Time elapsed Type of injury 치와 영구치 모두 상악 중절치로 보고하였다 1,5,7,20) . 본 조사에서 도 유치와 영구치 모두에서 상악 중절치의 외상이 가장 많았으 며, 상악과 하악에 따른 유의한 차이를 보였다(p < 0.01).…”

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“…외상의 유형을 살펴보면, 대부분의 연구에서 유치는 치주조 직의 손상이 7,13,17,18,20) , 영구치는 경조직의 손상이 높게 나타난다 고 하였다 1,6,10) . 이는 유치열기에서는 치조골이 유연하고 큰 골 수강을 보이며 유치의 치관은 크고 치근이 짧아 탈구에 유리해 지며 5,20) , 영구치열기에서는 나이가 듦에 따라 골 유연성이 감소 하므로 치주조직의 저항성이 높아져 치아가 그 자체로 충격에 노출되기 때문으로 사료된다 6,11) . 유치열의 치아 외상 유형에 대 하여 몇몇 연구는 진탕이 17,19) , 또 다른 연구들에서는 아탈구가 6,14) 가장 흔하게 나타난다고 보고하였다.…”

unclassified

“…본 조사에서 외상이 가장 호발하는 나이는 유치열은 1~2세, 영구치열은 8~9세였다. 몇몇 연구에서는 본 조사와 일치하게 유치열에서 외상이 호발하는 나이를 1~2세[17][18][19] 로 보고하였고, 또 다른 연구에서는 1~3세5,20) 로 보고하였다. 유아기 걸음마를 배우는 시기의 아동은 신체적으로 운동반사 신경이 충분히 발 달되지 않아 위급한 상황에 처했을 때 넘어지는 일이 흔하므로 안면 두개부 외상이 많이 발생한다17) .…”

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A Retrospective Study of the Pattern and Treatment of Traumatic Dental Injury to Primary and Permanent Teeth

Kim¹,

Kim²,

Choi

2014

THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY

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This study investigated the pattern and treatment of traumatic dental injury (TDI), with respect to the time elapsed prior to the initial visit to the Department of Pediatric Dentistry, Chonnam National University Dental Hospital for TDI, from January 2009 to December 2013. The dental trauma records of a total of 378 patients (940 traumatic teeth) were analyzed. The prevalence rate of dental trauma was twofold higher in males versus females. The principal cause of injury, among all participants, was falling (36.5%). The most commonly affected teeth were the maxillary central incisors (66.9%). Subluxation (43.9%) represented the most common trauma for primary teeth, and uncomplicated crown fracture in permanent teeth (30.9%). Only 10% of patients visited the dental clinic within 1 hour of sustaining trauma. The principal treatment provided for primary teeth, during the initial clinical visit, was follow-up (53.2%); for permanent teeth it was root canal treatment (27.3%). The prevalence of root canal treatment for permanent teeth increased commensurate with the time elapsed since injury. These data suggest that delayed checkup following trauma may increase the risk of loss of pulp vitality.

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mTORC1 signaling pathway regulates tooth repair

Liu

Zhou

et al. 2023

Int J Oral Sci

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Tooth germ injury can lead to abnormal tooth development and even tooth loss, affecting various aspects of the stomatognathic system including form, function, and appearance. However, the research about tooth germ injury model on cellular and molecule mechanism of tooth germ repair is still very limited. Therefore, it is of great importance for the prevention and treatment of tooth germ injury to study the important mechanism of tooth germ repair by a tooth germ injury model. Here, we constructed a Tg(dlx2b:Dendra2-NTR) transgenic line that labeled tooth germ specifically. Taking advantage of the NTR/Mtz system, the dlx2b+ tooth germ cells were depleted by Mtz effectively. The process of tooth germ repair was evaluated by antibody staining, in situ hybridization, EdU staining and alizarin red staining. The severely injured tooth germ was repaired in several days after Mtz treatment was stopped. In the early stage of tooth germ repair, the expression of phosphorylated 4E-BP1 was increased, indicating that mTORC1 is activated. Inhibition of mTORC1 signaling in vitro or knockdown of mTORC1 signaling in vivo could inhibit the repair of injured tooth germ. Normally, mouse incisors were repaired after damage, but inhibition/promotion of mTORC1 signaling inhibited/promoted this repair progress. Overall, we are the first to construct a stable and repeatable repair model of severe tooth germ injury, and our results reveal that mTORC1 signaling plays a crucial role during tooth germ repair, providing a potential target for clinical treatment of tooth germ injury.

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Trauma to the primary dentition and its sequelae

Cited by 18 publications

References 15 publications

Association between Trauma to Primary Incisors and Crown Alterations in Permanent Successors

Association between Trauma to Primary Incisors and Crown Alterations in Permanent Successors

A Retrospective Study of the Pattern and Treatment of Traumatic Dental Injury to Primary and Permanent Teeth

mTORC1 signaling pathway regulates tooth repair

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