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• W2989629505 abstract "The maxillary sinuses have different sizes and shapes. They may differ from one in the left with the right. The ground of the maxillary sinus is closely border with the maxillary tooth row. The closer the contact of the teeth with the mucous membrane – the more risk faces the dentist and otolaryngologist in a number of surgical procedures. Planar X-rays are not suitable for accurate morphometric evaluation of the structural interactions between the sinuses and the roots of the maxillary teeth, while the cone-beam computed tomography allows a careful analysis of their correlation. Complications are most often associated with under-examination of the patient in full before the necessary intervention. Therefore, the purpose of our study was to find out the relationship between the roots of the maxillary teeth and the structures of the ground of the maxillary sinus (MS) in persons of mature age according to the data of a cone-beam computer tomographic examination. In the course of the research work, computer tomograms of persons with variants of the norm of maxillary sinuses were used. The working group included 102 computer tomograms (55 women and 47 men) aged 21-65. The survey was performed on the Point 3D Combi 500 (Korea) cone-beam, in the Center for Medical 3D Diagnostics in Lviv. Software providing visualization - software Xelis dental. The results are statistically processed using the Microsoft Excel 2010 software, which is part of the Microsoft Office 2010 suite. The results of the analysis of computer tomograms of the nose and paranasal sinuses showed that none of the 102 examined subjects of different periods of mature aged males and females had a complete absence of contact between the maxillary tooth roots and the maxillary sinuses. In the analyzed computer tomograms, contacts were still detected in one degree or another, namely – in 3 persons of the female gender there was no contact with the maxillary tooth row (MTR) only on the left side, when it was present on the right and in 1 person of the male gender, as well there was no contact of the maxillary tooth row with MS from the left side. In the rest – 96 people (50 women and 46 men), the contact with the MTR was present at the appropriate teeth. Considering and analyzing the contacts of the maxillary tooth row with MS, both with the sinus mucosa, and with its cortical plate, the left and right MS respectively, we can assert that contact with the cortical plate and mucous membrane is independent of the side. On the left side and on the right side, we often see contact with the cortical plate of the 25th tooth, namely 54 persons (52.9 % of cases) and the fifteenth tooth, namely 56% (54.9 % of cases) of the respective side, and at least with the 23rd (in 8 persons – 7.84 % of cases) and 13th (in 9 persons – 8.82 % of cases) by the teeth of the respective party. Concerning the contact of the MTR with the mucous membrane of the MS, the most frequent contact is observed with 26th (in 47 individuals – 46.08 % of cases) and 27th tooth (in 58 individuals – 56.86 % of cases) in the left and with the 16th tooth (in 47 individuals – 46.08 % of cases) and with 17th tooth (55 individuals – 3.92 % of cases) on the right side. No contact was ever observed with the MS's mucous membrane of the 23rd and 13th teeth, and very rarely - contact of the MS occurred with 14th (in 2 persons – 1.96 % of cases) and 24th (in one person – 0.98 %) teeth. The contacts of the teeth with the MS's mucous membrane and cortical plate, depending on the age, were also analyzed. The analysis of age-related changes in MS showed that in the early adulthood, contact cortical plate of the MS with the 25th and 15th teeth of the respective side is most frequently observed, namely in 66.7 % and 64.9 % of cases, respectively, and at least with the 23, 24 and 13, 14th teeth of the side concerned, namely 10.5 %, 22.8 % and 10.5 %, and 14 % of the cases of the respective side. The contact of the MS's mucous membrane with the maxillary tooth row in the early mature age was found to be most common in the 26, 27th and 16, 17th teeth of the respective side, namely in 54.4 %, 70.2 % and 59.6 %, 61.4 % of cases of the respective side. The contact of the MS's mucous membrane with 13, 23th teeth in the early mature age was never revealed, and contact with 14, 24th teeth of the MTR was found extremely rarely (1.75 % of cases). The MS's cortical plate in the early mature age was in contact with 18, 28th teeth of the MTR in 33.3 % and 29.2 % of cases, and the MS's mucous membrane at the same early mature age was in contact with 18, 28 teeth of MTR in 22.8 % and 24.6 % of cases. Concerning the late mature age, the contact of the cortical plate of the MS is most common with 15, 25 and 16, 26 teeth of the respective side, namely in 42.2 %, 35,6 % and 44,4%, 37,8 % of cases of the corresponding side, and contact of a mucous membrane of 17 and 27 teeth in 44 %, 44.4 % of cases. At the very least, in the late mature age, 13, 23rd teeth roots are contacted – 6.7 and 4.4 % of the cases of the corresponding side. The contact of the mucous membrane of the MS is practically absent with 13, 14, 23 and 24 teeth (maximum 2.2 % of cases), and only on average in 16 % of cases there is contact with 15 and 25 teeth in the late mature age. Thus, it can be noted that the contacts of the cortical plate and the mucous membrane of the MS with the teeth of MTR with age decreasing. In the early mature age, the contact of 5th tooth with MS's cortical plate is observed in 66.7 % and 64.9 % of cases, and in the late mature age – only in 35.6 % and 42.2 % of cases. It is also worth noting that at early mature contacts of the MS's cortical plate are more often seen with 13, 23; 14, 24; and 15, 25 teeth of the corresponding side, when the contact of the mucous membrane of the MS is more often with the 16, 26 and 17, 27 teeth, respectively. In late adolescence, there is almost no contact 13, 23 and 14, 24 teeth with MS's mucous membrane. However, 17 and 27 teeth of the MTR most often contact with the mucous membrane of the MS at this age, namely in 44.4 % and 40 % of cases, respectively. In late adulthood, 18 and 28 teeth contact with the mucous membrane of MS in 17.8 % and 15.6 % of cases, respectively, due to age characteristics. In the early adulthood, contacts with the Ms's mucous membrane are dominated, when in the late adulthood contacts of both the mucous membrane and the cortical plate of the MS are almost identical. Conclusions: The frequency of contact with the MS's cortical plate and the mucous membrane is not dependent on the side. The most frequent contacts of the teeth of the maxillary tooth row with the maxillary sinus's mucous membrane are observed with 16, 26m and 17, 27th teeth of the corresponding side. There has never been contact with the mucous membrane of the MS with the 23rd and 13th tooth root, and very rarely with the 14th and 24th tooth root. Contacts of the cortical plate and the mucous membrane of the MS with the teeth of the MTR with age are reduced. In the early adulthood, contact with the mucous membrane of the MS is dominated, when in the late adulthood the contacts of both the mucous membrane and the cortical plate of the MS are almost identical." @default.
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• W2989629505 date "2019-01-23" @default.
• W2989629505 modified "2023-10-17" @default.
• W2989629505 title "POSSIBLE VARIATIONS OF THE MAXILLARY SINUSES CONTACTS WITH THE TEETH OF MAXILLARY TOOTH ROW ACCORDING TO THE CONE-BEAM COMPUTED TOMOGRAPH" @default.
• W2989629505 doi "https://doi.org/10.24061/1727-0847.18.1.2019.6" @default.
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