Tooth agenesis denotes a condition where teeth are missing due to a developmental failure. According to severity, this malformation can be subdivided into hypodontia, oligodontia and anodontia. With a frequency of 20–30%, tooth agenesis is the most prevalent dental dysplasia, but not all teeth are equally affected. Familial occurrence and concordance in twins indicate potential genetic causes. ...

The general aim of this thesis was to broaden our knowledge of the signs and symptoms, genetics, and outcomes of dental implant treatment in individuals with oligodontia or ectodermal dysplasia. Article I is a population-based study in three Swedish counties of 162 individuals with oligodontia, which was a prevalence of 0.09%. The intent was to explore ways for dentists to assess symptoms from ...

The genes for axin inhibition protein 2 (AXIN2), msh homeobox 1 (MSX1), and paired box gene 9 (PAX9) are involved in tooth root formation and tooth development. Mutations of the AXIN2, MSX1, and PAX9 genes are associated with non-syndromic oligodontia. In this study, we investigated phenotype and AXIN2, MSX1, and PAX9 gene variations in two Mexican families with non-syndromic oligodontia. Indiv...

BACKGROUND The aim of computer-designed surgical templates is to attain higher precision and accuracy of implant placement, particularly for compromised cases. PURPOSE The purpose of this study is to show the benefit of a full three-dimensional virtual workflow to guide implant placement in oligodontia cases where treatment is challenging due compromised bone quantity and limited interdental ...

Oligodontia is a rare genetic disorder which represents the congenital absence of more than six teeth in primary, permanent or both dentitions. It is usually a part of a syndrome and seldom occurs as an isolated entity. Genes responsible for non syndromic oligodontia are found to be MSX1 and PAX9 genes. In this case report a 13 year old boy is presented who had absence of all four second perman...

O presente artigo é um estudo de caso, com estrutura descritiva e qualitativa, objetivo relatar o tratamento endodôntico em segundo molar decíduo esquerdo (75), paciente oligodontia. Após anamnese exame clínico diagnóstico necrose pulpar foi estabelecido. Posteriormente tecido cariado removido broca esférica baixa rotação, elemento isolado, acessado preparo químico-mecânico realizado auxílio li...

Oligodontia, a form of hypodontia, is commonly seen in permanent than in deciduous dentition. It is defined as the congenital absence of six or more teeth, excluding third molars. It is relatively a rare condition which occurs as an isolated finding or as part of a syndrome. The present paper shows a rare case of oligodontia with ectodermal dysplasia in 2 siblings (boys). Both the cases were as...

OBJECTIVE To express the early prosthodontic treatment strategies for severe oligodontia patients with or without a syndrome and to share details of their experiences of the long-term follow-up. METHODS Patients with severe oligodontia (excluding the third molars, and with six or more congenitally missing permanent teeth) who had finished prosthetic rehabilitation between 2001 and 2014 and wh...

OBJECTIVE The aim was to evaluate the prevalence and distribution of tooth number anomalies in a Turkish subpopulation. MATERIALS AND METHODS A population of 2722 patients (1532 females and 1190 males; mean age, 12.33 ± 2.5 years) was retrospectively examined to determine the prevalence and distribution of the hypodontia, oligodontia, and hyperdontia using panoramic radiographs. All permanent...

AIM The aim of this report is to describe the management of a 16-year-old patient with oligodontia including six permanent teeth. BACKGROUND Oligodontia is agenesis of six teeth or more, excluding third molars. The etiology of congenital absence of teeth is believed to be involved in heredity or developmental anomalies. It can be isolated or as part of a syndrome. There are a number of option...