 Hello everyone welcome back to a new session on dentistry and more today's topic is ghost teeth original odenture dysplasia which is also known as odentogenesis imperfecta which comes under third year oral pathology and A1 infestier dental histology so it comes along with amelogenesis imperfecta and dentinogenesis imperfecta the first one was affecting enamel dentinogenesis imperfecta affecting the dentine and this affects both enamel and dentin so let's see what is ghost teeth or original odenture dysplasia ghost is it's nothing but abnormalities of enamel dentin and pulp so it is the etiology is basically unknown so it could be local trauma radiation hypophosphatacea hypocalcemia and hyper pyroxia so due to these reasons there will be abnormalities and enamel dentin and pulp so it is most commonly recognized at the age of tooth eruption that is between two to four years in deciduous and seven to eleven years in permanent teeth that is mostly the central incisor lateral incisor and canines so the ghost teeth or regional odenture dysplasia it is abnormal enamel dentin and pulp formation especially in the maxillary anterior teeth it can be seen both in deciduous and permanent dentation so let's see the etiology so it could be a local trauma or irradiation or hypophosphatacea hypocalcemia or even hyper pyroxia so what happens is there is abnormal formation of enamel dentin and pulp so it is most commonly recognized at the age of two to four years in deciduous dentition and seven to eleven years in permanent dentition so during this period the maxillary central incisor lateral incisor carions are erupting and it is most commonly seen in maxillary teeth or the anterior teeth so what happens is these teeth sometimes fail to erupt or if they erupt they show yellow formed yellow deformed crowns with a rough surface because it has very hyper plastic hypo mineralized hypo hypo mineralized enamel and dentin which is not properly mineralized so they are very easy to undergo staining and deformation so there will be a rough surface and there will be a stained yellow stained deformed crowns so sometimes they won't erupt at all if it erupts it shows in this way so the affected tooth have very thin enamel and these teeth appear as crumbled that is because of its peculiar radiographic feature it shows abnormal radiolucency that is marked reduction in the radio density so the abnormal radiolucency makes the tooth as a ghost appearance that's why it's known as ghost teeth because the hypo plastic hypo calcified dentin and enamel with large pulp chamber makes it a ghost appearance there will be big pulp chamber very thin enamel very thin dentin makes it a ghost appearance that is why it's known as ghost teeth and it is regional odendoplasty and it is affecting the particular region and the odendo and displaceous malformation or improper formation of cells displaceous multiplication of cell so the name itself gives a clue so most of the diseases, syndromes, cysts everything gives a clue we get a bit of answer from the title itself so that is how it is becoming a ghost teeth a large pulp chamber with very thin enamel and dentin so in this case the roots will be very short and poorly outlined and there will be localized arrest in tooth development and it is most commonly diagnosed by the clinical appearance and radiographic appearances there will be irregular shaped brown discoloration and radiographic we can easily see in the ghost appearance of tooth and management either we can do extraction of these teeth and undergo a prosthetic rehabilitation and also respiratory procedures such as root canal treatment can be done so it depends on the patient's clinical profile so that's all about ghost teeth or regional odendo displacia or odendo genesis imperfecta so this is odendo genesis imperfecta so dentino genesis imperfecta affecting dentin amylo genesis imperfecta is affecting enamel and odendo genesis imperfecta is affecting both enamel dentin and pulp giving a ghost teeth so I'll come up with a new session to understand more thank you