شیوا الوندی فر

It is a worthy aim to preserve the pulp vitality in teeth with immature root in order to continue the root's maturation. Traumatic injuries and caries are two main reasons for pulp exposure in immature teeth. This article describes two vital pulp therapies on two patients, a nine-year-old boy with traumatized central tooth and a 10-year-old boy with caries exposure in a premolar tooth. Both teeth had open apices in radiography. After removing inflamed pulp, the pulp cap was done using calcium silicate cements (CEM cement, MTA angelus) and then, the teeth were restored with filling material. In periodical follow-ups, both treated teeth remained functional, with complete root development and apex formation. Regarding to the potentiality of pulp healing in immature teeth, vital pulp therapy (VPT) can be an acceptable treatment. However, further clinical studies with longer follow-up periods are recommended

Precise evaluation of dental developmental stages is a part of diagnosis and treatment of children's diseases and is also used in forensic dentistry. Of radiological methods to estimate dental age in children, Nolla's method was preferred in the present study. However, Nolla’s standards have been derived from the American population and may not be applicable to other populations. The aim of this study was to determine chronological and dental ages based on diagnostic technique of Nolla in a group of Iranian children in Babol, aged 8 to 14 years.
In this descriptive/analytical cross-sectional study, dental development was evaluated based on Nolla’s method on 420 panoramic radiographic images of children aged 8‒years without any developmental anomalies. The children were assigned to 14 groups based on sex and chronological age. The dental ages of 32 teeth in each case were estimated by two specialists based on Nolla's developmental stages. Data were analyzed with SPSS 16 using paired t-test (α = 0.05).
In this study the dental ages of males were closer to those depicted by Nolla compared to females and with aging the derived data became more consistent with Nolla’s estimates (p value > 0.05). Nearly in all the teeth, the mean dental age of males was lower than that of females (p value > 0.05).
The standards of Nolla on American children need some modifications and new standards to be used for children in Babol, Iran.