Pulp Space Morphology PDF

your knowledge of pulp space morphology show us that there is variations. Incisors : central incisor : upper anatomy reflects...

your knowledge of pulp space morphology show us that there is variations. Incisors : central incisor : upper anatomy reflects External internal - incisal edge : wide -> the anatomy - so the pulp chamber will be wide according to the incisal redge. and edge proximal according to mamelous inthe incisal -> under the line angles we find the horns of the pulp chamber - There is no separation between the pulp chamber and the radicular part of the pulp · There is high incidence of lateral canals and accessory canals - from the middle to the apex At the there is incidence of apical delta apex ·. -When working with upper central incisors it is important to do activation when doing root canal treatment. · The mesiodistal with is wider than the buccolingual width. (the pulp chamber is narrow buccolingually.) *The root is usually rounded and as we go Apically it become more rounded * 100 % will have on e root · 1 % - 2 Canals 99 % one Canal  lower Central incisor : · broader buccolingually in the coronal third > - - The cross Section Oval (ribbon Shape), As we go Apically become m o re rounded. it is the smallest - and shortest tooth. - higher probability than the upper to be 2 Canals , but mainly it is on e Canal. · Could have a lingual shelf /Constriction in the buccolingual dimension then become wider) we should know that as we do the access Cavity -. ↑ central incisor upper : The shape of is not different with the central incisor · pulp space very comparing The is Central (1mm)) but the root - c row n shorter than the is the same length. - The root cross section > - more rounded , And as we go Apically roundation increases. - There is curvature at the apical thirds in the distopalatal direction. ↳ clinical application : Acute Apical Abscess. (When necrosis occur bacteria may reach to bone , this will Cause acute inflammation (neutrophils will be prominent and they have high acidic activity this will Cause degradation and pus formation this will Cause Swelling i nthe palatal region) * 2 Canals > - 14 % Note In the the width maxillary teeth mesiodistal is close : to the bucolingual width comparing with the mandibular teeth. As in lower teeth there is a big difference. lower lateral incisor : - larger than the lower central incisor - higher probability of having 2 canals than the central - usually have isthmus The - pulp chamber have a sharp end and long at the lingual surface extended ↳ Clinical application : the access Cavity will betoval shaped at the lingual Surface & 2 canals > - 20% 3D to find the second canals - X-ray help us Canine upper : The tooth (The length could extreme - longest. be widest buccolingual with of the in the Oral Cavity - pulp space. - Cross section is round at the coronal third , and more rounded at the apical third -have one casp - so the pulp horn is pointed at the cusp (only one pulp horn) - of Canals > - 31(2 Canals) lower Canine : broader - buccolingually -have probability of & roots 2 Canals low having + - 7 % -2 Canals Note : Clinical applications about the lengon of upper Canine- > Any formation of periapical abscess will be at the canine fossa - easily Spread of pus to the orbit  upper first premolar : - most common- > 2 routs , could be root (rare - There is separation between the chamber and the radicular part at under cusp) (Every horn -2 horns the chamber is its pulp pulp - The palatal Cusip is larger but the buccal is higher (longer) - if the cross section is ribbon shaped and the canal are far from each others & its mostly 2 roots - mostly its Type 11 /1 isthmus - 77 % -2 Canals , 1. 2% -3 Canals second premolar apper : - higher probability of being I root. - higher probability of being I canal lower first premolar : - single root (with pointed tip) - Lingual (the Lingual ; · The buccal cusp is larger that the is very small - Could be single canal or 2 canals - 97 % - Single root 2% 2 2 roots 271-2 canals lower second premolar : lower probability of 2 Canals (usually 1 Canal - having - The king of apical delta - 15 % - 2 canals * When have 2 canals original we > - the Canal is the buccal canal and the second is the Lingwall (small Canal) first molar upper : - largest tooth. (largest pulp space + cusps + roots) Broots 4 Canals. - - mostly - The palatal cusp is the largest cusp (so the palatal pulp horn is the largest The - highest pulp horn is the mesiobuccal pulp horn. The location of Chamber mesial marginal ridge - pulp : to the - Palatal root is more rounded , distobuccal + mesiobuccal roots > more - oval mesiobuccal root second canal - MB2 called mesiopalatal. may have - or upper Second molar : - smaller cusp than the first so the pulp space is smaller. - mostly it is 3 Canals (Could be Ycanals if MB2 is there) - in both first and second the MBI could meet the MB2 - first 194 % that MB1 + MB2 meets at the apical part - Distobuccal Could be - DBI + DB32 - Could be 2 palatal Canals  lower first molar : cusps (5 pulp horns) 5 -usually 2 roots - -highest pulp horn - > mesiobuccal - The functional cusp of the lowers - buccal cusp · The buccal cusp is the largest t highest (higher exposure - if there is broots - radix - pulp chamber is extending from the central fissure to the mesial part. canals mesial root usually - -> have - Mesiobuccal + mesiolingual to meet ->8 %. broader - roots are burlingually. lower second molar : - could be 2 canals or I canal (if I canal its mostly C-shaped Ennal -usually 2 roots (inferior alveolar) 15 - This tooth is very close to the nerve (may cause damage to the ID When working with this booth - troot + 7%