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Paper text:
achalasia is a primary esophageal motility disorder caused by damage to the myenteric plexus , which is denoted by the lack of lower esophageal sphincter ( les ) relaxation and esophageal peristalsis .
the condition was termed achalasia ( greek for  lack of relaxation  ) by arthur hurst in 1927 .
achalasia is prevalent in both genders at 0.8% with an incidence of 1 in 1,00,000 population per year at 0.05% with no age barrier , however , incidence peaks in the 3 and 7 decade of life .
the symptoms include regurgitation of bland undigested food or saliva due to dysphagia to solids and liquids with occasional weight loss , heart burn , and chest pain .
a 14-year - old female patient reported to the department of prosthodontics with the chief complaint of pain and sensitivity in multiple teeth and aesthetics .
patient also gave a history of repeated vomiting and inability to swallow both solid and liquid foods .
on general examination , there was stunted growth and reduced vertical height of the face ; on intraoral examination , multiple erosive lesions and multiple pulpally involved teeth with extensive destruction of enamel and dentin were present . patient was referred the department of gastroenterology , and routine blood investigations were done which were found to be normal .
after balloon dilatation , the patient was relieved of symptoms . in order to preserve the remaining tooth structure
primary impressions were made with irreversible hydrocolloid material , i.e. , alginate impression material and poured cast with type iii dental stone [ figure 2 ] .
extraction of 15 14 11 21 24 25 26 36 45 46 was done under antibiotic coverage as the teeth eroded to the level of crest of the ridge and were not suitable for using it as abutments to avoid secondary infections .
root canal treatment was done in relation to 16 13 12 22 23 35 34 33 32 31 41 42 43 44 47 for pulpally involved teeth [ figure 3 ] and then tooth preparation was done in relation to 13 12 22 23 35 34 33 32 31 41 42 43 44 .
then , metal copings were fabricated on working cast by using co - cr metal alloy .
these copings were permanently cemented with glass ionomer cement on 13 12 22 23 in the maxillary arch and 35 34 33 32 31 41 42 43 44 in the mandibular arch [ figure 5 ] . on that conventional overlay
then , the denture was relined at regular intervals with a soft liner [ figure 7 ] .
preoperative orthopantomogram orthopantomogram : during treatment final impressions with polyvinyl siloxane ( light body ) metal copings cemented with glass ionomer cement : intraoral view final finishing of overlay dentures set rehabilitation with overlay dentures : extraoral view
inhibitory neurons are responsible for the coordination of lower esophageal sphincter relaxation and peristaltic contractions of the esophagus . in achalasia cardia ,
the inhibitory neurons are affected by the degeneration of the plexus myentericus with unknown origin of genetic , autoimmune , or infectious cause . in the present case ,
the symptoms included severe vomiting while consuming food that causes dental erosion , leading to severe sensitivity of many teeth .
various etiological factors of dental erosion in children are caused by consumption of acidic and carbonated beverages , such as citric fruit juices and soft drinks ; vomiting and gastroesophageal reflux ; and frequent swimming in heavily chlorinated water .
heavy alcohol intake and spicy food consumption are other risk factors in adults . in this case , the dental erosion was caused by repeated regurgitation of food .
we planned for overdenture where we selected 12 13 22 23 31 32 33 34 35 41 42 43 44 as abutments because they contain larger roots compared to the posterior teeth . in a 4-year study by renner et al .
, it was found that 50% of the roots used as overdenture abutments remained immobile .
finally , overdenture was constructed and denture was relined every 6 months during postinsertion check - up .
devan golden statement of  perpetual preservation of what remains is more important than the meticulous replacement of what is missing  still rings true .
overdenture is definitely a better option as compared to a conventional removable prosthesis particularly in achalasia cases because we preserve the remaining tooth structures with metal copings and reconstruct the remaining .
however , early diagnosis of achalasia cardia plays a major role in preventing the teeth from erosion .
however , it is anytime advisable to use occlusal splints and fluoride application during the treatment phase of achalasia cardia with balloon dilatation .
once the patient is relieved of symptoms , prosthetic rehabilitation can be carried out based upon the severity of erosion .
the authors certify that they have obtained all appropriate patient consent forms . in the form the patient(s )
has / have given his / her / their consent for his / her / their images and other clinical information to be reported in the journal .
the patients understand that their names and initials will not be published and due efforts will be made to conceal their identity , but anonymity can not be guaranteed .
the authors certify that they have obtained all appropriate patient consent forms . in the form the patient(s )
has / have given his / her / their consent for his / her / their images and other clinical information to be reported in the journal .
the patients understand that their names and initials will not be published and due efforts will be made to conceal their identity , but anonymity can not be guaranteed .
achalasia cardia is an idiopathic esophageal motor disorder distinguished by the loss of esophageal peristalsis and insufficient relaxation of the lower esophageal sphincter . 
 the oral manifestation of the disease is dental erosion caused by the regurgitation of the gastric contents and vomiting . 
 a female patient aged 14 years reported to the department of prosthodontics , lenora institute of dental sciences , with complaints concerning aesthetics and pain in relation to several teeth . 
 patient gave history of loss of tooth structure over the past few years with associated sensitivity and pain in several teeth . 
 patient also gave history of inability to consume sufficient amount of food owing to the repeated vomiting . 
 this paper aims to present a rare case report of achalasia cardia by rehabiliting the remaining teeth with overlay denture .