hey guys it's Ryan welcome back to another oral pathology video and this time we're gonna talk about fibro osseous bone lesions so these are benign tumors that are composed of fibrous tissue in which new bony islands develop so a lot of these are going to contain a radiopaque component because we're talking about this osseous mineralized and fibrous tissue so think more radiopaque as opposed to the cysts and tumors that we've talked about most of them being radiolucent so first we're gonna talk about the central ossifying fibroma this is composed of fibroblastic stroma or connective tissue in which foci of mineralized products are formed and ossifying is referring to this sort of bony tissue and the mineralized products you can see in this image here we have this basically radiolucent lesion but it contains this radiopaque little specks of ossification mineralized products that are at the center of this legion now if you watch my last video on odontogenic tumors we talked about central odontogenic fibroma and the peripheral version and the same theme is here the same theme in that central referring is referring to the lesion occurring in bone and this case is going to be a well circumscribed radial lucency with this ossification by-product this ossification product in the center and peripheral meaning that's occurring in the gum tissue and you're not gonna see this iconic radiolucent appearance there's also a juvenile version of it and this is an aggressive variant with rapid growth and of course since it's called juvenile affecting a younger patient population now similar in appearance and behavior to the cement affiant fibroma which is an Adonijah night tumor and honestly is probably not too important to remember that fact for the exam treatment as in a lot of the lesions we've been talking about lately is with surgical excision next we have fibrous dysplasia and the most important term to remember for this one is it having a ground-glass appearance so ground glass is well one way to remember it at least I remember it I remember the word fiberglass and fiberglass to me reminds me of fibrous dysplasia and this ground glass appearance so i linked fibrous and glass together that's again very important to remember that and it usually stops growing after puberty but before then it can be very expanse I'll and cause some facial distortions and you can see how big they can get in this image here and this ground glass appearance is like this very soft kind of radial radiopaque appearance throughout the entire lesion we have another syndrome here this is McCune Albright syndrome and it has a poly aesthetic which means it affects more than one bone of fibrous dysplasia plus cutaneous cafe au lait spots which are basically these a certain type of freckles + and new current abnormalities like precocious puberty a curl occurring a little earlier so that's a syndrome that I wouldn't know for the exam and treatment for fibrous dysplasia would be surgical recontouring for cosmetics and you probably practically want to wait until after puberty when this lesion stops growing so you know you won't get a significant amount of recurrence undoing your surgical work next we have another very commonly tested one periapical cement o osseous dysplasia or Pia Cod for short this one is a reactive process of unknown origin and by far most common at the apices of mandibular anterior teeth as seen in this image here and it's also most common in middle-aged black females and that is also a very commonly tested fact teeth here even though they may look like they're the Pope's or necrotic because why are there these lesions at the apex centered around the apex you'd think it's some sort of infection but this is actually again a reactive process of unknown origin and the teeth if you were to test them are actually vital that's a really important fact to know to differentiate something that may look like a node on an endodontic or periodontal infection and is actually just peat cod that looks like it could be something a lot worse when you have this lesion it actually starts out looking more radiolucent and it becomes a little bit more radiopaque with this sort of radiolucent border around it like you see in this image here now the treatment here is actually nothing just to monitor it next we have the osteoblasts Toma and this is a circumscribed opaque mass of bone and osteoblasts so you can imagine if we're talking about mineralized tissue it's going to appear radiopaque and the treatment here is surgical excision and that's actually it for this video guys thanks for watching if you liked this video please leave a like and subscribe to my channel if you haven't already for more on oral pathology and other things dentistry thanks again for watching guys and I'll see you all in the next video