Poštić, Srđan

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orcid::0000-0001-9640-3282
  • Poštić, Srđan (1)
  • Poštić, Srđan D. (1)
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Author's Bibliography

Investigation of antioxidant capacity of several luting cements processes by HPMC method

Ilić, Dragan V.; Obradović-Đuričić, Kosovka; Medić, Vesna; Poštić, Srđan; Gorjanović, Stanislava; Pastor, Ferenc; Radović, Katarina

(2016)

TY  - JOUR
AU  - Ilić, Dragan V.
AU  - Obradović-Đuričić, Kosovka
AU  - Medić, Vesna
AU  - Poštić, Srđan
AU  - Gorjanović, Stanislava
AU  - Pastor, Ferenc
AU  - Radović, Katarina
PY  - 2016
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/218
AB  - Background: Free radicals (FR) occur in oral cavity where lot of food was transferred to through entire life under specific saliva conditions. Many enzymes, microorganism, alcohol beverages, nicotine and other harmful or indifferent substances when in contact to oral tissues might provoke oxidation process under specific condition creating FR's. The similar role might have various dental materials. Aim of the study was to record the level of antioxidant (AO) activity of several permanent (P) luting cements alone or combined with quercetin AO substance. Materials/Methods: P cements were Zn-phosphate, Zn-polycarboxilate, GIC and composite resin cement. They were prepared as original prescription and their variant by 1% weight addition of quercetin. AO activity of cements was measured by HPMC test evaluated by Student t test. Results: There were statistically significant differences among Zn-phosphate, Zn-polycarboxilate and resin dental cements (p  gt  0,05). GIC displayed significantly higher AO values (p  lt  0,01) versus other three cements. There were no difference in AO capacity between sample of original P cements and their corresponding quercetin variants (p  gt  0,05). Conclusions: Conventional GIC displayed the most powerful AO activity among P luting cements. Addition of 1% antioxidant quercetin did not improve AO capacity of investigated cements.
T2  - Balkan Journal of Dental Medicine
T1  - Investigation of antioxidant capacity of several luting cements processes by HPMC method
VL  - 20
IS  - 3
SP  - 155
EP  - 159
DO  - 10.1515/bjdm-2016-0025
ER  - 
@article{
author = "Ilić, Dragan V. and Obradović-Đuričić, Kosovka and Medić, Vesna and Poštić, Srđan and Gorjanović, Stanislava and Pastor, Ferenc and Radović, Katarina",
year = "2016",
abstract = "Background: Free radicals (FR) occur in oral cavity where lot of food was transferred to through entire life under specific saliva conditions. Many enzymes, microorganism, alcohol beverages, nicotine and other harmful or indifferent substances when in contact to oral tissues might provoke oxidation process under specific condition creating FR's. The similar role might have various dental materials. Aim of the study was to record the level of antioxidant (AO) activity of several permanent (P) luting cements alone or combined with quercetin AO substance. Materials/Methods: P cements were Zn-phosphate, Zn-polycarboxilate, GIC and composite resin cement. They were prepared as original prescription and their variant by 1% weight addition of quercetin. AO activity of cements was measured by HPMC test evaluated by Student t test. Results: There were statistically significant differences among Zn-phosphate, Zn-polycarboxilate and resin dental cements (p  gt  0,05). GIC displayed significantly higher AO values (p  lt  0,01) versus other three cements. There were no difference in AO capacity between sample of original P cements and their corresponding quercetin variants (p  gt  0,05). Conclusions: Conventional GIC displayed the most powerful AO activity among P luting cements. Addition of 1% antioxidant quercetin did not improve AO capacity of investigated cements.",
journal = "Balkan Journal of Dental Medicine",
title = "Investigation of antioxidant capacity of several luting cements processes by HPMC method",
volume = "20",
number = "3",
pages = "155-159",
doi = "10.1515/bjdm-2016-0025"
}
Ilić, D. V., Obradović-Đuričić, K., Medić, V., Poštić, S., Gorjanović, S., Pastor, F.,& Radović, K.. (2016). Investigation of antioxidant capacity of several luting cements processes by HPMC method. in Balkan Journal of Dental Medicine, 20(3), 155-159.
https://doi.org/10.1515/bjdm-2016-0025
Ilić DV, Obradović-Đuričić K, Medić V, Poštić S, Gorjanović S, Pastor F, Radović K. Investigation of antioxidant capacity of several luting cements processes by HPMC method. in Balkan Journal of Dental Medicine. 2016;20(3):155-159.
doi:10.1515/bjdm-2016-0025 .
Ilić, Dragan V., Obradović-Đuričić, Kosovka, Medić, Vesna, Poštić, Srđan, Gorjanović, Stanislava, Pastor, Ferenc, Radović, Katarina, "Investigation of antioxidant capacity of several luting cements processes by HPMC method" in Balkan Journal of Dental Medicine, 20, no. 3 (2016):155-159,
https://doi.org/10.1515/bjdm-2016-0025 . .

Changes of mineral compositions of mandibular body due to osteoporosis

Poštić, Srđan D.; Veselinović, Dragan S.; Stanišić-Sinobad, Darinka; Gržetić, Ivan; Torring, O.; Rakočević, Zoran

(2004)

TY  - JOUR
AU  - Poštić, Srđan D.
AU  - Veselinović, Dragan S.
AU  - Stanišić-Sinobad, Darinka
AU  - Gržetić, Ivan
AU  - Torring, O.
AU  - Rakočević, Zoran
PY  - 2004
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/138
AB  - The aim of investigation was to determine physical-chemic characteristics of selected segments of mandibular corpuses from 2 cadavers which would be indicators to determine changes of bone compositions due to osteoporosis. 3 samples from massive mandibular body from cadaver where teeth of lower arch persisted and 3 samples from mandibular edentulous corpus from another cadaver were investigated. External borders of samples were assigned. In the same x-ray exposing and in identical processing 2 orthopantomographs were made and optical densities(OPDs) of regions of interest were analyzed using DT II 05 (EU(England,UK)). Samples of similar dimensions were cut and then analyzed by scanning-electronic microscopy (Philips,EU). Using bensol as liquid phase on 200C in pycnometer, densities of samples of bones were analyzed. Values of OPDs, in U/mm2, amount: -2.48-sample(S)l, -2.86 S2, -2.51 S3, -0.90 S4, -1.40 S5, -0.62 S6. Statistically significant, to p lt 0.01 totals of cancellous sites were established in comparisons: of S6 and of S4, of SI and of S5 as well as of S2 and of S4, and to p lt 0.1 were established in comparisons: of Sl and of S3, of SI and of S6, of S2 and of S5, of S2 and of S6, of S3 and of S4, as well as of S6 and of S4. Mean thickness of cortical lamellae, in mm, amount: 17.9 ± 7.51 in S1, 12.22 + 1.17 in S2, 31.03 ± 8.91 in S3, 9.31 ± 3.89 in S4, 23.9 ± 11.7 in S5 and 4.06 ± 1,02 in S6. Densities in g/cm3, amount: 1.9658 for S1, 2.1141 for S2, 2.0748 for S3, 2.1296 for S4 2.2231 for S5 and 2.1357 for S6. Differences of densities and of compositions of non-osteoporotic mandibular-body samples, and of mandibular osteoporotic samples were determined.
AB  - Osteoporoza jeste značajno i zastupljeno oboljenje kada dominiraju procesi razgrađivanja kostnih supstanci u humanim organizmima. Za razliku od činjenica da u literaturi postoje brojni prikazi – makroskopski patološki preparati, mikroskopski patološki preparati, šematizovane ilustracije itd. skoro da nema podataka ni o promenama fizičkih parametara, niti o uticajima kompleksnih hemijskih jedinjenja u kostnim supstancama izmenjenim usled osteoporoza na fizičko-hemijske osobenosti izmenjene kosti, tako da dosta toga još uvek nije ispitano u vezi karakteristika, izmena sastava i fizičko-hemijske osobenosti osteoporoznih kosti. (Kanis 1994; 1996, WHO 1994 Kršljak 1995, Novaković i Giordani 1996, Poštić, Marković, Veselinović Tijanić i Zec 2001). Svakako bi trebalo da bude interesantno i značajno proceniti šta je izmenjeno u makrostrukturama i šta je sve izmenjeno u mikrostrukturama kosti oštećenih usled osteoporoza. Čini se da je važno utvrditi kako bi trebalo delovati na nivou jedinjenja i potencijalno na nivou molekula. Stoga je potrebno ispitati kako bi, na osnovu izmena u mikrostrukturama kosti, trebalo inicirati pozitivno remodelovanje kostne supstance, da li su formirana jedinjenja kakva je potrebno razgraditi zato što su apsolutno nepovoljna ili je moguće delovati, bez obzira na formirana odnosno preformirana jedinjenja, apozicijama potrebnih i u smislu osteogenih potencijala kvalitetnih jedinjenja na nivoima mikrostruktura. Ispitivanjima fizičko-hemijskih promena mikrostruktura kosti trebalo bi da budu utvrđeni karakteristični podaci, tako da bi na osnovu karakterističnih podataka trebalo proceniti da li bi aplikovanjima posebno sintetisanih jedinjenja odnosno specifičnih supstanci i aplikovanjima posebno kombinovanih supstanci bilo moguće poboljšati strukture kosti, ojačati segmente kosti - poboljšati fizičko-hemijska svojstva i sprečiti frakture segmenata kosti.
T2  - Glasnik Antropološkog društva Jugoslavije
T1  - Changes of mineral compositions of mandibular body due to osteoporosis
T1  - Promene mineralnih sastava mandibulnog tela u osteoporozi
IS  - 39
SP  - 161
EP  - 172
UR  - https://hdl.handle.net/21.15107/rcub_cherry_138
ER  - 
@article{
author = "Poštić, Srđan D. and Veselinović, Dragan S. and Stanišić-Sinobad, Darinka and Gržetić, Ivan and Torring, O. and Rakočević, Zoran",
year = "2004",
abstract = "The aim of investigation was to determine physical-chemic characteristics of selected segments of mandibular corpuses from 2 cadavers which would be indicators to determine changes of bone compositions due to osteoporosis. 3 samples from massive mandibular body from cadaver where teeth of lower arch persisted and 3 samples from mandibular edentulous corpus from another cadaver were investigated. External borders of samples were assigned. In the same x-ray exposing and in identical processing 2 orthopantomographs were made and optical densities(OPDs) of regions of interest were analyzed using DT II 05 (EU(England,UK)). Samples of similar dimensions were cut and then analyzed by scanning-electronic microscopy (Philips,EU). Using bensol as liquid phase on 200C in pycnometer, densities of samples of bones were analyzed. Values of OPDs, in U/mm2, amount: -2.48-sample(S)l, -2.86 S2, -2.51 S3, -0.90 S4, -1.40 S5, -0.62 S6. Statistically significant, to p lt 0.01 totals of cancellous sites were established in comparisons: of S6 and of S4, of SI and of S5 as well as of S2 and of S4, and to p lt 0.1 were established in comparisons: of Sl and of S3, of SI and of S6, of S2 and of S5, of S2 and of S6, of S3 and of S4, as well as of S6 and of S4. Mean thickness of cortical lamellae, in mm, amount: 17.9 ± 7.51 in S1, 12.22 + 1.17 in S2, 31.03 ± 8.91 in S3, 9.31 ± 3.89 in S4, 23.9 ± 11.7 in S5 and 4.06 ± 1,02 in S6. Densities in g/cm3, amount: 1.9658 for S1, 2.1141 for S2, 2.0748 for S3, 2.1296 for S4 2.2231 for S5 and 2.1357 for S6. Differences of densities and of compositions of non-osteoporotic mandibular-body samples, and of mandibular osteoporotic samples were determined., Osteoporoza jeste značajno i zastupljeno oboljenje kada dominiraju procesi razgrađivanja kostnih supstanci u humanim organizmima. Za razliku od činjenica da u literaturi postoje brojni prikazi – makroskopski patološki preparati, mikroskopski patološki preparati, šematizovane ilustracije itd. skoro da nema podataka ni o promenama fizičkih parametara, niti o uticajima kompleksnih hemijskih jedinjenja u kostnim supstancama izmenjenim usled osteoporoza na fizičko-hemijske osobenosti izmenjene kosti, tako da dosta toga još uvek nije ispitano u vezi karakteristika, izmena sastava i fizičko-hemijske osobenosti osteoporoznih kosti. (Kanis 1994; 1996, WHO 1994 Kršljak 1995, Novaković i Giordani 1996, Poštić, Marković, Veselinović Tijanić i Zec 2001). Svakako bi trebalo da bude interesantno i značajno proceniti šta je izmenjeno u makrostrukturama i šta je sve izmenjeno u mikrostrukturama kosti oštećenih usled osteoporoza. Čini se da je važno utvrditi kako bi trebalo delovati na nivou jedinjenja i potencijalno na nivou molekula. Stoga je potrebno ispitati kako bi, na osnovu izmena u mikrostrukturama kosti, trebalo inicirati pozitivno remodelovanje kostne supstance, da li su formirana jedinjenja kakva je potrebno razgraditi zato što su apsolutno nepovoljna ili je moguće delovati, bez obzira na formirana odnosno preformirana jedinjenja, apozicijama potrebnih i u smislu osteogenih potencijala kvalitetnih jedinjenja na nivoima mikrostruktura. Ispitivanjima fizičko-hemijskih promena mikrostruktura kosti trebalo bi da budu utvrđeni karakteristični podaci, tako da bi na osnovu karakterističnih podataka trebalo proceniti da li bi aplikovanjima posebno sintetisanih jedinjenja odnosno specifičnih supstanci i aplikovanjima posebno kombinovanih supstanci bilo moguće poboljšati strukture kosti, ojačati segmente kosti - poboljšati fizičko-hemijska svojstva i sprečiti frakture segmenata kosti.",
journal = "Glasnik Antropološkog društva Jugoslavije",
title = "Changes of mineral compositions of mandibular body due to osteoporosis, Promene mineralnih sastava mandibulnog tela u osteoporozi",
number = "39",
pages = "161-172",
url = "https://hdl.handle.net/21.15107/rcub_cherry_138"
}
Poštić, S. D., Veselinović, D. S., Stanišić-Sinobad, D., Gržetić, I., Torring, O.,& Rakočević, Z.. (2004). Changes of mineral compositions of mandibular body due to osteoporosis. in Glasnik Antropološkog društva Jugoslavije(39), 161-172.
https://hdl.handle.net/21.15107/rcub_cherry_138
Poštić SD, Veselinović DS, Stanišić-Sinobad D, Gržetić I, Torring O, Rakočević Z. Changes of mineral compositions of mandibular body due to osteoporosis. in Glasnik Antropološkog društva Jugoslavije. 2004;(39):161-172.
https://hdl.handle.net/21.15107/rcub_cherry_138 .
Poštić, Srđan D., Veselinović, Dragan S., Stanišić-Sinobad, Darinka, Gržetić, Ivan, Torring, O., Rakočević, Zoran, "Changes of mineral compositions of mandibular body due to osteoporosis" in Glasnik Antropološkog društva Jugoslavije, no. 39 (2004):161-172,
https://hdl.handle.net/21.15107/rcub_cherry_138 .