In our study, the structural and morphological applications of hydroxyapatite and chitosan nanopa... more In our study, the structural and morphological applications of hydroxyapatite and chitosan nanoparticles and coated micro-implants were assessed for their ability to combat oral pathogenic bacteria. The hydroxyapatite, as well as chitosan nanoparticles, were synthesized from the Salvadora persica plant. The crystal morphology, phase composition, particle size, and surface functional groups of the nano-samples were analyzed via classical examinations and energy dispersive X-ray analysis. The prepared nanoparticles have been examined for antibacterial activity against four common oral bacterial strains. The antimicrobial effect was also assessed by the Live/Dead BacLight technique in combination with confocal scanning laser microscopy. Titanium micro-implants were coated with regular hydroxyapatite (HAP) and chitosan nanoparticles, and the surface was characterized by scanning electron microscopy. The analysis asserted elemental composition of the prepared nanoparticles and their text...
<p>Age ranges for modern individuals based on regression analysis probability distribution ... more <p>Age ranges for modern individuals based on regression analysis probability distribution (PI, prediction interval).</p
<p>Definition of the staging system used for scoring spheno-occipital synchondrosis closure... more <p>Definition of the staging system used for scoring spheno-occipital synchondrosis closure degree.</p
<p>Spheno-occipital synchondrosis closure rate in females (percentage / year) between 9–16 ... more <p>Spheno-occipital synchondrosis closure rate in females (percentage / year) between 9–16 years.</p
<p>Descriptive statistics for spheno-occipital synchondrosis closure in study population.&l... more <p>Descriptive statistics for spheno-occipital synchondrosis closure in study population.</p
<p>Correlation between age and spheno-occipital synchondrosis closure in males (n = 361) an... more <p>Correlation between age and spheno-occipital synchondrosis closure in males (n = 361) and females (n = 380).</p
<p>Mid-sagittal CBCT evaluation of spheno-occipital synchondrosis while the head in the def... more <p>Mid-sagittal CBCT evaluation of spheno-occipital synchondrosis while the head in the default orientation.</p
<p>Spheno-occipital synchondrosis closure rate in males (percentage / year) between 9–16 ye... more <p>Spheno-occipital synchondrosis closure rate in males (percentage / year) between 9–16 years.</p
Objective To provide information on the prevalence and clinical features of impacted third molar ... more Objective To provide information on the prevalence and clinical features of impacted third molar teeth in the South-Western region of Saudi Arabia. Material and methods In this cross-sectional study, 1200 panoramic radiographs (50% males and 50% females) were retrieved from the electronic clinical records of patients at the College of Dentistry, Jazan University from December 2014 to December 2016, and impacted third molars were evaluated. Data on clinical and radiographic presentation were analyzed. Results Overall, there were 291 (24.3%) patients with impacted third molars among 1200 radiographs. The distribution of impacted third molars according to the number of impacted teeth was as follows: one impaction in 121 (41.6%); two impactions in 90 (30.9%); three impactions in 42 (14.4%); and four impactions in 38 (13.1%) patients. There was a high prevalence of all impaction types among females (54.5%). Maxillary vertical angulation was most common (50%) followed by mandibular mesioangular angulation (48.3%). The depth of impaction in maxillary teeth was higher than in mandibular teeth. Pain was uncommon (4.5% of patients). Discussion Clinically, vertical impaction in the maxilla was present in 50% of patients because of limited posterior space, and mesioangular angulation in the mandible was present in 48% of patients because of inadequate space between the ramus and the second molar. These findings are similar to other reports. Vertical impaction of the maxillary wisdom tooth is mostly related to the discrepancy between the mesiodistal size of the tooth crown and the limited retromolar space. Conclusion Noiseless presentation of an impacted third molar requires raising the population’s awareness about the need for diagnosis and treatment of the problem to avoid any further complications. The study can be to guide surgical procedures. This study documented the prevalence, pattern, and clinical features of impacted third molars in South Western region of Saudi Arabia.
In our study, the structural and morphological applications of hydroxyapatite and chitosan nanopa... more In our study, the structural and morphological applications of hydroxyapatite and chitosan nanoparticles and coated micro-implants were assessed for their ability to combat oral pathogenic bacteria. The hydroxyapatite, as well as chitosan nanoparticles, were synthesized from the Salvadora persica plant. The crystal morphology, phase composition, particle size, and surface functional groups of the nano-samples were analyzed via classical examinations and energy dispersive X-ray analysis. The prepared nanoparticles have been examined for antibacterial activity against four common oral bacterial strains. The antimicrobial effect was also assessed by the Live/Dead BacLight technique in combination with confocal scanning laser microscopy. Titanium micro-implants were coated with regular hydroxyapatite (HAP) and chitosan nanoparticles, and the surface was characterized by scanning electron microscopy. The analysis asserted elemental composition of the prepared nanoparticles and their text...
<p>Age ranges for modern individuals based on regression analysis probability distribution ... more <p>Age ranges for modern individuals based on regression analysis probability distribution (PI, prediction interval).</p
<p>Definition of the staging system used for scoring spheno-occipital synchondrosis closure... more <p>Definition of the staging system used for scoring spheno-occipital synchondrosis closure degree.</p
<p>Spheno-occipital synchondrosis closure rate in females (percentage / year) between 9–16 ... more <p>Spheno-occipital synchondrosis closure rate in females (percentage / year) between 9–16 years.</p
<p>Descriptive statistics for spheno-occipital synchondrosis closure in study population.&l... more <p>Descriptive statistics for spheno-occipital synchondrosis closure in study population.</p
<p>Correlation between age and spheno-occipital synchondrosis closure in males (n = 361) an... more <p>Correlation between age and spheno-occipital synchondrosis closure in males (n = 361) and females (n = 380).</p
<p>Mid-sagittal CBCT evaluation of spheno-occipital synchondrosis while the head in the def... more <p>Mid-sagittal CBCT evaluation of spheno-occipital synchondrosis while the head in the default orientation.</p
<p>Spheno-occipital synchondrosis closure rate in males (percentage / year) between 9–16 ye... more <p>Spheno-occipital synchondrosis closure rate in males (percentage / year) between 9–16 years.</p
Objective To provide information on the prevalence and clinical features of impacted third molar ... more Objective To provide information on the prevalence and clinical features of impacted third molar teeth in the South-Western region of Saudi Arabia. Material and methods In this cross-sectional study, 1200 panoramic radiographs (50% males and 50% females) were retrieved from the electronic clinical records of patients at the College of Dentistry, Jazan University from December 2014 to December 2016, and impacted third molars were evaluated. Data on clinical and radiographic presentation were analyzed. Results Overall, there were 291 (24.3%) patients with impacted third molars among 1200 radiographs. The distribution of impacted third molars according to the number of impacted teeth was as follows: one impaction in 121 (41.6%); two impactions in 90 (30.9%); three impactions in 42 (14.4%); and four impactions in 38 (13.1%) patients. There was a high prevalence of all impaction types among females (54.5%). Maxillary vertical angulation was most common (50%) followed by mandibular mesioangular angulation (48.3%). The depth of impaction in maxillary teeth was higher than in mandibular teeth. Pain was uncommon (4.5% of patients). Discussion Clinically, vertical impaction in the maxilla was present in 50% of patients because of limited posterior space, and mesioangular angulation in the mandible was present in 48% of patients because of inadequate space between the ramus and the second molar. These findings are similar to other reports. Vertical impaction of the maxillary wisdom tooth is mostly related to the discrepancy between the mesiodistal size of the tooth crown and the limited retromolar space. Conclusion Noiseless presentation of an impacted third molar requires raising the population’s awareness about the need for diagnosis and treatment of the problem to avoid any further complications. The study can be to guide surgical procedures. This study documented the prevalence, pattern, and clinical features of impacted third molars in South Western region of Saudi Arabia.
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