 Hello everyone welcome back to another session in dentistry and more today we have a small topic from dental anatomy that is sequence of eruption so we have sequence of eruption of deciduous teeth and permanent teeth with respect to maxillary and mandibular arch. So while considering the maxillary teeth the first tooth irreps is maxillary central incisor that is a deciduous one that is denoted by a we use the Igmondi Parma system that is a quadrant system so each quadrant we have a b c d e that is central incisor lateral incisor canine first molar and second molar similarly all quadrant we have this a b c d e this is Igmondi Parma system that is a quadrant denotation of teeth arrangement so the first tooth irreps in maxillary the central incisor that is around 8 to 12 months then the lateral incisor around 9 to 13 months then comes the first molar not the canine first molar that is around one to one and a half years then comes the canine that is around one and a half to two years and lastly the second molar that is two to two and a half years so the sequences coming like this a b d c and e for maxillary deciduous teeth whereas a mandibular deciduous teeth it starts again with central incisor that is much more earlier 6 to 10 months then lateral incisor 10 to 16 months then comes again the first molar one to one and a half years then canine one and a half to two years and second molar that is two to two and a half years again the same sequence we have a b d c and e central lateral first molar canine and second molar that is a sequence of erection of deciduous teeth okay so all together when we take this maxillary and mandibular together the first teeth erupt into oral cavity is a mandibular central incisor that is these two mandibular lower central incisor then comes the maxillary central incisor on both sides sometimes it may vary a little months gap but the first teeth irreps into the baby's oral cavity is a lower central incisor then comes the maxillary central incisor then comes the maxillary lateral incisor okay then comes the mandibular lateral incisor because this is 9 to 13 months little earlier than the lower teeth then comes molars the first molars almost same time it erupts into oral cavity maxillary and mandibular again the canine and second molar also almost same time but mostly the female gender will be having more earlier erection than the male gender that is a common scenario but this is a sequence first the lower central incisor then the upper central incisor then the upper lateral incisor then comes the lower lateral incisor then the rest of the teeth are almost same time okay there is no arch predilection or the earlier erection so we'll start with the permanent teeth that is a maxilla so first tooth irreps into oral cavity with respect to maxillizer first molar first permanent molar around to five and half to six and half years then the central incisor that is one that is around seven to eight years and lateral incisor eight to nine years first premolar not canine first premolar that is ten to eleven years then comes a second premolar or canine mostly it comes together that is a five and three around eleven to twelve years then second molar around 12 to 13 years and third molar it has a bigger variation it comes 14 to 20 or 21 sometimes it won't come because it might get ankylosed or impacted so in permanent teeth we have the zygmondeparma system as 1 2 3 4 5 6 7 8 that is a quadrant wise 1 2 3 4 5 6 7 8 central lateral canine first premolar second premolar first molar second molar third molar so whereas a mantibular teeth we have the sequence first is the first molar five and half to six and half years then the central incisor six to seven years then the lateral incisor seven to eight years but then comes the canine not first premolar maxillary teeth we have first premolar here it is the same sequence canine then comes the first premolar around 10 to 11 years then second premolar around 11 to 12 years then the second molar 11 to 13 years and finally the last molar around 15 to 20 years so that is a sequence in maxilla and mandible mandible teeth we have the same sequence 6 1 2 3 4 5 7 8 but here we have 6 1 2 4 5 3 or 7 8 okay so in maxilla we can say it is 6 1 2 4 3 5 7 8 so that order it comes whereas a mandible we have 6 1 2 3 4 5 7 and 8 so when we take maxilla and mandible teeth together the permanent teeth so when we take maxilla and mandible permanent teeth together the first teeth irreps into oral cavity it will be sometimes central incisor and the lower molas and similarly there will be upper molas then we have the upper central incisor then there will be lower lateral incisor then we have upper lateral incisors then after 8 to 9 years we have lower canines then comes the upper first premolar then we have the lower first premolar and at the same time we have upper first primo second premolar and canine and canine then we have lower second molar then we have upper second molar and third molar varies so that is the eruption sequence of deciduous teeth and permanent teeth respect to maxilla and mandible and all together so I'll come up with a new topic in dental anatomy thank you