Symmetric multiquadrant isolated dentin dysplasia (SMIDD), a unique presentation mimicking dentin dysplasia type 1b

Qari, Hiba; Kessler, Harvey P.; Narayana, Nagamani; Premaraj, Sundaralingam

doi:10.1016/j.oooo.2016.11.024

Cited by 11 publications

(53 citation statements)

References 22 publications

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“…With the exception of one patient in the literature and our series, permanent first molars were involved in all cases (Figure ). In that patient, the permanent second molars were affected . Permanent central incisors were affected in 35.6% of patients, primary second molars in 39.1% of patients, and permanent canines in 6.9% of patients.…”

Section: Resultsmentioning

confidence: 90%

“…Brusevold et al reported that the molars in two of their cases demonstrated demarcated opacities. These malformations most commonly involve the permanent first molars; however, primary second molars, permanent incisors, and rarely other teeth have been reported to also be affected . In the cases that showed more extensive involvement of other teeth besides the primary second molars and permanent incisors, it is important to note that the first permanent molars were still affected in all of these cases .…”

Section: Discussionmentioning

confidence: 97%

“…In the largest case series to date, Wright et al referred to this new dental phenotype as molar root‐incisor malformation. Given the symmetric clinical presentation in their series and previously reported cases as well as the radiographic similarities to DD‐1b, Qari et al proposed the nomenclature of symmetric multiquadrant isolated dentin dysplasia (SMIDD) in 2017. We support Lee et al’s designation for this condition, as the condition is not always symmetrical.…”

Section: Discussionmentioning

confidence: 99%

“…Numerous tooth and root malformations can be encountered in dental practice . One of these generalized, heritable defects is dentin dysplasia type 1 (DD‐1), which has an autosomal dominant pattern of inheritance . A rare condition, it is found in about one in 100 000 patients .…”

Section: Introductionmentioning

confidence: 99%

“…Later, Lee et al described 12 cases of this dental abnormality, which they named molar‐incisor malformation (MIM). Since its initial description, several reports and series have documented additional MIM cases involving the permanent first molars, permanent central incisors, and also other teeth …”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Molar‐incisor malformation: Eight new cases and a review of the literature

Vargo

Reddy

Costa

et al. 2019

Int J Paed Dentistry

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Background Molar‐incisor malformation (MIM) is a recently described dental abnormality. While MIM mimics dentin dysplasia, it presents in a localized pattern. Furthermore, it is speculated that MIM is caused by significant early‐life medical history. Aim The purpose of this study is to present a series of MIM cases and compare the findings with the literature. Design An extensive search of all published cases of MIM in the English‐language literature was conducted. Additionally, an institutional review board‐approved retrospective search was performed within the University of Florida oral pathology biopsy service archives. Radiographic consultation cases were also included. Cases lacking radiographs were excluded. Results Seventy‐nine cases were identified in the literature, and eight cases were identified in our retrospective search. All but one case involved the permanent first molars. The average age at diagnosis was 9 years. Many patients reported significant early‐life medical histories. Conclusions MIM usually affects the permanent first molars and may be linked to early‐life medical conditions or interventions. Oral healthcare providers, especially paediatric dentists, should be aware of MIM to avoid misdiagnosing it as dentin dysplasia. Long‐term follow‐up studies with thorough medical history documentation are essential to understand the pathogenesis and aetiology and to create treatment guidelines.

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Section: Resultsmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Molar‐incisor malformation: Eight new cases and a review of the literature

Vargo

Reddy

Costa

et al. 2019

Int J Paed Dentistry

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Clinico-radiologic features of molar-incisor malformation in a case series of 38 patients

Kim

Hong

et al. 2019

Medicine

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Molar-incisor malformation (MIM) is a recently defined dental abnormality of molar root and incisors, and introduced as one of the causes of periapical and periodontal abscess. The purpose of this study was to investigate the clinical and radiological features of MIM, with special emphasis on various medical history. A total of 38 patients with MIM were included in this study. Radiographic features and clinical data, including medical history, chief complaint, associated complications, treatment, and prognosis, were retrospectively investigated. On radiographs, the affected molars showed short, slender, underdeveloped roots and constricted pulp chambers. All affected incisors and canines exhibited dilacerated short roots, wedge-shaped defect on the cervical part of the crown. Complications included periodontal bone loss (52.6%), endodontic lesion (50.0%), and endodontic-periodontal lesion (28.9%). The medical histories of the patients with MIM indicate that almost all (94.7%) were hospitalized due to problems during the neonatal period. MIM may cause various dental problems, such as periapical and periodontal abscess and early loss of the affected teeth. The early diagnosis of MIM on radiographs and appropriate treatment will contribute to a favorable prognosis, especially for young and adolescent patients.

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Molar‐incisor‐malformation in a paediatric cancer patient: Case report

Tosiou,

Mastrokalou,

Prasad

et al. 2023

Oral Surgery

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AimTo report a case of molar‐incisor‐malformation (MIM) in a 7‐year‐old boy with a history of congenital infantile fibrosarcoma of the upper chest, which was surgically treated, without adjuvant radio/chemotherapy.Material and MethodsThe boy presented with mobility and pain on percussion of the permanent mandibular first molars. The radiographic features were suggestive of MIM. Both teeth were extracted and processed for conventional light microscopic examination and non‐decalcified ground sections.ResultsThe microscopic features confirmed the diagnosis of MIM. Regular follow‐up was recommended.ConclusionsMedical interventions during hospitalization for cancer treatment, other than chemo/radiotherapy, may cause MIM by adversely affecting the function of Hertwig's epithelial root sheath. Regular dental screening in paediatric cancer patients may reveal more MIM cases and help in elucidating its pathogenesis.

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Symmetric multiquadrant isolated dentin dysplasia (SMIDD), a unique presentation mimicking dentin dysplasia type 1b

Cited by 11 publications

References 22 publications

Molar‐incisor malformation: Eight new cases and a review of the literature

Molar‐incisor malformation: Eight new cases and a review of the literature

Clinico-radiologic features of molar-incisor malformation in a case series of 38 patients

Molar‐incisor‐malformation in a paediatric cancer patient: Case report

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