Oral and dental alterations and growth disruption following chemotherapy in long-term survivors of childhood malignancies.

Purpose: More attention has been focused on the long-term side effects of treatment protocols since impressive advances in childhood cancer treatment have resulted in a growing population of patients. The purpose of this study was to investigate the disturbances of dento-facial development in children who were long-term survivors of childhood malignancies.

Methods: Fifty-three children (mean age, 10 years + 4 months) in long-term remission underwent oral/dental and radiographic examinations after completion of therapy.

Biomechanical comparison of sinus floor elevation and alternative treatment methods for dental implant placement.

Objective: In this study, we compared the success of sinus lifting and alternative treatment methods in applying dental implants in cases lacking adequate bone due to pneumatization of the maxillary sinus.

Methods: In a computer environment, 3D models were created using computerized tomography data from a patient. Additionally, implants and abutments were scanned at the macroscopic level, and the resulting images were transferred to the 3D models.

Thiol-thione tautomeric analysis, spectroscopic (FT-IR, Laser-Raman, NMR and UV-vis) properties and DFT computations of 5-(3-pyridyl)-4H-1,2,4-triazole-3-thiol molecule.

In this study, the 5-(3-pyridyl)-4H-1,2,4-triazole-3-thiol molecule (C7H6N4S) molecule has been characterized by using FT-IR, Laser-Raman, NMR and UV-vis spectroscopies. Quantum chemical calculations have been performed to investigate the molecular structure (thione-thiol tautomerism), vibrational wavenumbers, electronic transition absorption wavelengths in DMSO solvent and vacuum, proton and carbon-13 NMR chemical shifts and HOMOs-LUMOs energies at DFT/B3LYP/6-311++G(d,p) level for all five tautomers of the title molecule. The obtained results show that the calculated vibrational wavenumbers, NMR chemical shifts and UV-vis wavelengths are in a good agreement with experimental data.

DFT calculations, spectroscopy and antioxidant activity studies on (E)-2-nitro-4-[(phenylimino)methyl]phenol.

We have reported synthesis and characterization of (E)-2-nitro-4-[(phenylimino)methyl]phenol by using X-ray crystallographic method, FT-IR and UV-vis spectroscopies and density functional theory (DFT). Optimized geometry and vibrational frequencies of the title compound in the ground state have been computed by using B3LYP with the 6-311G+(d,p) basis set. HOMO-LUMO energy gap, Non-linear optical properties and NBO analysis of the compound are performed at B3LYP/6-311G+(d,p) level.

Efficacy of vibration on venipuncture pain scores in a pediatric emergency department.

Objective: Venipuncture is a frequent source of painful procedures for infants. It has been well documented that infants react to pain with a combination of physiologic and behavioral responses. Infants are unable to describe pain and at particularly high risk for inadequate pain management.

Clinical and radiographic evaluation of the efficacy of platelet-rich plasma combined with hydroxyapatite bone graft substitutes in the treatment of intra-bony defects in maxillofacial region.

Objective: The aim of this study is to evaluate the efficacy of platelet-rich plasma (PRP) clinically and radiographically when combined with bovine derived hydroxyapatite (HA) bone grafting materials and resorbable collagen membranes for the treatment of intra-bony defects frequently seen at the distal aspect of mandibular second molars following the surgical extraction of fully impacted mandibular wisdom teeth.

Study Design: Eighteen patients were scheduled for post-operative visits at 1, 3 and 6 months post-operatively, probing depths were measured and digital panoramic radiographs were taken.

Results: There were no significant differences on probing depths among two groups.

Isolation, characterization, spectroscopic properties and quantum chemical computations of an important phytoalexin resveratrol as antioxidant component from Vitis labrusca L. and their chemical compositions.

In this study, isolation and characterization of trans-resveratrol (RES) as an antioxidant compound were carried out from VLE, VLG and VLS. Furthermore, antioxidant activities were evaluated by using six different methods. Finally, total phenolic, flavonoid, ascorbic acid, anthocyanin, lycopene, β-carotene and vitamin E contents were carried out.

Crystal structure, spectroscopic characterization and density functional studies of (E)-1-((3-methoxyphenylimino)methyl)naphthalen-2-ol.

The Schiff base compound (E)-1-((3-methoxyphenylimino)methyl)naphthalen-2-ol was synthesized from the reaction of 2-hydroxy-1-naphthaldehyde with 3-methoxyaniline. The structural properties of the compound has been characterized by using FT-IR, UV-vis and X-ray single-crystal methods. According to X-ray diffraction result, the title compound exists in the phenol-imine tautomeric form.

1-{(E)-[4-Bromo-2-(trifluoro-meth-oxy)phen-yl]imino-meth-yl}naphthalen-2-ol.

The title compound, C18H11BrF3NO2, crystallizes in the phenol-imine tautomeric form, with a strong intra-molecular O-H⋯N hydrogen bond. The dihedral angle between the naphthalene ring system and the benzene ring is 28.54 (10)°.

1-{(Z)-[2-Meth-oxy-5-(trifluoro-meth-yl)anilino]methyl-idene}naphthalen-2(1H)-one.

The title compound, C(19)H(14)F(3)NO(2), crystallizes in the keto-amine tautomeric form, with a strong intra-molecular N-H⋯O hydrogen bond. The mol-ecule is almost planar; the dihedral angle between the naphthalene ring system and the benzene ring is 4.60 (7)°.

(E)-N-[(2-Eth-oxy-naphthalen-1-yl)methyl-idene]-2-ethyl-aniline.

In the title compound, C(21)H(21)NO, the dihedral angle between the naphthalene ring system and the benzene ring is 64.61 (6)°. The mol-ecular structure is stabilized by an intra-molecular C-H⋯N hydrogen bond.

(E)-2-[(3-Fluoro-phen-yl)imino-meth-yl]-4-(trifluoro-meth-oxy)phenol.

The title compound, C(14)H(9)F(4)NO(2), is a Schiff base which adopts the phenol-imine tautomeric form in the solid state. The H atom is located on the hydr-oxy O atom rather than on the N atom. This H atom is involved in a strong intra-molecular O-H⋯N hydrogen bond.

(E)-1-[(2-Fluoro-phen-yl)imino-meth-yl]-2-naphthol-(Z)-1-[(2-fluoro-phen-yl)amino-methyl-idene]naphthalen-2(1H)-one (0.57/0.43).

The title Schiff base compound, 0.57C(17)H(12)FNO·0.43C(17)H(12)FNO, reveals both the enol (OH) and keto (NH) tautomeric forms with occupancies of 0.

(E)-4-{2-[(4-Chloro-phen-yl)imino-meth-yl]phen-oxy}phthalonitrile.

In the title compound, C(21)H(12)ClN(3)O, the phenoxy ring makes dihedral angles of 51.42 (5) and 65.01 (6)°, respectively, with the chlorophenyl and phthalonitrile rings.

2-[(E)-2-(4-Methyl-benzene-sulfonamido)ethyl-iminiometh-yl]-4-nitro-phenolate.

The mol-ecule of the title compound, C(16)H(17)N(3)O(5)S, crystallizes in a zwitterionic form, with a strong intra-molecular N-H⋯O hydrogen bond. The dihedral angle between the two benzene rings is 7.06 (9)°.

(Z)-Ethyl 4-chloro-2-[(4-chloro-phen-yl)hydrazono]-3-oxobutanoate.

The title compound, C(12)H(12)Cl(2)N(2)O(3), crystallizes as a non-merohedral twin with a twinning ratio of 0.51:0.49.

Bilateral tonsillolithiasis: a case report.

Although tonsilloliths are reported to be fairly common, florid cases casting distinct radiopaque shadows on panoramic radiographs are not often reported. This report illustrates such a case as an incidental finding in an asymptomatic 38-year-old female dental patient. Panoramic radiography revealed distinct radiopaque shadows over the ascending rami of the mandible bilaterally.

Long-term effects of chemotherapy on orodental structures in children with non-Hodgkin's lymphoma.

The aim of this study was to investigate the late effects of treatment for childhood non-Hodgkin's lymphomas (NHL) on oral health and dental development. Thirty-six long-term survivors that had been treated with chemotherapy of childhood NHL were included in this study and 36 volunteers with similar age and sex distribution served as controls. Both groups underwent a complete orodental examination for decayed, missing and filled teeth and surfaces, gingival and periodontal health according to the Loe-Silness Gingival Index and Sillnes-Loe Plaque Index, enamel defects and discolorations, root malformations, eruption status, agenesis, premature apexifications and microdontia.

Efficacy of temporomandibular joint arthrocentesis with and without injection of sodium hyaluronate in treatment of internal derangements.

Purpose: This study was designed to investigate the efficacy of arthrocentesis with and without injection of sodium hyaluronate (SH) into the upper joint space in the treatment of temporomandibular joint (TMJ) internal derangements.

Patients And Methods: Forty-one TMJs in 5 males and 26 females aged 14 to 53 years comprised the study material. The patients' complaints were limited mouth opening, TMJ pain and tenderness, and joint noises during function.

Effect of arthrocentesis and sodium hyaluronate injection on nitrite, nitrate, and thiobarbituric acid-reactive substance levels in the synovial fluid.

Objective: To evaluate the effect of arthrocentesis and sodium hyaluronate (SH) injections on nitrite, nitrate, and thiobarbituric acid-reactive substance (TBA-RS) levels in temporomandibular joint internal derangements.

Study Design: Arthrocentesis was performed on 10 patients, and 15 patients received a supplemental injection of SH after arthrocentesis. All these patients received an SH injection 15 days after the first intervention.

Disturbances in oral and dental structures in patients with pediatric lymphoma after chemotherapy: a preliminary report.

Objective: The purpose of this study was to evaluate the effects of chemotherapy on oral and dental structures and craniofacial growth in 30 survivors of childhood lymphoma.

Study Design: Eruption status, root malformations, premature apexification, agenesis, crown anomalies, soft tissue abnormalities, gingival and periodontal status, enamel defects and discolorations, and craniofacial growth status of the subjects were documented and compared with findings in 20 healthy children who served as controls.

Results: Statistically significant (P < .

In vitro corrosion behaviour and microhardness of high-copper amalgams with platinum and indium.

Samples prepared from Luxalloy, GS-80, Permite-C and Logic and polished after 24 h by traditional methods were stored in polypropylene tubes containing phosphate-buffered saline solutions (pH 3.5 and 6.5) and distilled water.

Postoperative pain control by single doses of piroxicam administered sublingually and aspirin.

The objective of this study is to evaluate and compare the analgesic efficacy of Piroxicam Fast Dissolving Dosage Formulation (FDDF) administered sublingually either preoperatively or postoperatively with that of aspirin and placebo. Hundred patients, undergoing surgical removal of mandibular third molars were given sublingually either piroxicam FDDF 40 mg or placebo or aspirin 500 mg according to a double blind experimental model. Pain scores and pain relief was recorded hourly for six hours following the operation.

Tissue reaction to three subcutaneously implanted local hemostatic agents.

Soft tissue response to three subcutaneously implanted local hemostatic agents; oxidised regenerated cellulose (Surgicel), gelatin sponge (Spongostan) and collagen sponge (Hemostagen) were evaluated histopathologically 7, 14, 21, 30 and 45 days following their implantation in rats. The results showed that all materials were well tolerated by soft tissues. These materials neither seemed to impair nor contribute to wound healing.

Extracellular alkaline phosphatase activity as a possible marker for wound healing: a preliminary report.

Purpose: This study evaluated the use of extracellular alkaline phosphatase activity as a marker of wound healing.

Materials And Methods: Fifteen 8-week-old Wistar rats, weighing 180 to 220 g and of both sexes, made up the material of this study. Histopathologic aspects of the healing of full-thickness of wounds created on the dorsal skin of these rats were studied by means of alkaline phosphatase (ALP) enzyme histochemistry and routine microscopy.