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ObjectivesThe objective of this study was to report the integrated observations of high‐risk HPV‐related oral squamous carcinoma (OSCC) at our national referral center for cancer, the Dharmais National Cancer Hospital (DNCH), Jakarta, from 2003 to 2013.Materials and MethodsSeventy‐eight formalin‐fixed paraffin‐embedded specimens obtained from OSCC cases were collected from 2003 to 2013 DNCH archives and were included in this high‐risk HPV (HR‐HPV) study. Seventy‐nine DNA samples from the normal oral mucosa of healthy individuals were obtained from the Oral Biology Laboratory DNA archives from 2001 to 2005. Glyceraldehyde 3‐phosphate dehydrogenase was used as a control to ensure the DNA integrity for the subsequent HPV DNA PCR detection. High‐risk HPV16/18 DNA amplification was conducted by nested PCR using two pairs of primers that were designed specifically to identify the region of gene L1 HPV16 and the HPV16/18 region.Results and ConclusionsA high prevalence of HPV16/18 was detected in OSCC cases (17.9%). HPV18 occurred more often than HPV16 (86%) among OSCC patients who were HPV positive. This result supports high HPV18 prevalence among Indonesian cervical cancer patients studied in 1995 and 2006. The prevalence of high‐risk HPV remains low in the normal Indonesian population (3.8%), but HPV16 is consistently more frequently detected in non‐cancer populations.

The palatal rugae patterns provide potentially useful supplementary information to establish the identity of an individual, but only when appropriate antemortem data are available. For this purpose, it is suggested that optical 3D oral/dental scanning is used to retain the data on the rugal and oropalatal patterns. Suitable pattern recognition methods may also reduce the potential effects of rugae modification in time.

Dental development can be used to estimate age for forensic purposes. However, most of the currently available methods are less reliable for the Indonesian population due to population variability. This study presents a new method and evaluates other methods that utilize dental development to estimate the age of Indonesian people. Panoramic radiographs of 304 young Indonesian people aged 5-23 years old were analysed for deciduous tooth root resorption, permanent tooth calcification, and eruption. The extent of tooth root resorption was determined based on AlQahtani's modified Moorrees et al. method. Tooth calcification was classified based on a modified Demirjian et al. method. Tooth eruption was evaluated based on AlQahtani's modified Bengston system. The sequence of tooth root resorption, and permanent tooth calcification and eruption were grouped into 19 age categories (from 5-23 years old) in an atlas. The differences between males and females, between maxillary and mandibular teeth, and between right and left teeth were also analysed. There were minimal significant differences of tooth development between males and females, and between the right and left teeth (P > 0.05), while the maxillary and mandibular dental development was significantly different (P < 0.05). The newly developed atlas showed the development of the right side of maxillary and mandibular tooth of combined sex of Indonesian population. Another 34 panoramic radiographs of known-age and sex individuals from Indonesia were assessed using the newly developed Atlas of Dental Development in the Indonesian Population, Ubelaker's Dental Development Chart, The London Atlas of Human Tooth Development and Eruption by AlQahtani, and the Age Estimation Guide-Modern Australia population by Blenkin-Taylor. Accuracy was assessed by comparing estimated age to actual chronological age using the Bland-Altmand test. Results show that the smallest range of error was found in the Atlas of Dental Development in the Indonesian Population (−0.969 to 1.210 years), followed by The London Atlas of Human Tooth Development and Eruption by AlQahtani (−2.013 to 1.990 years), the Age Estimation Guide-Modern Australia population by Blenkin-Taylor (−2.495 to 2.598 years), the Dental Development Chart by Ubelaker (−2.960 to 3.289 years). These findings show that the Atlas of Dental Development constructed in this study performs better than the other three methods and presents greater accuracy of age estimation in the Indonesian population. KEY POINTS• Dental development such as deciduous tooth root resorption, permanent tooth calcification, and tooth eruption can be used to estimate age for forensic purposes. • The development of the teeth are influenced by genetic, ethnicity, and sex, therefore an age estimation method must be constructed based on the same population. • There were minimal significant differences in tooth development between male and female, and between right and left teeth, but there was significant difference between maxillary and mandibular teeth. • The A...

A DNA similarity matching using fuzzy inference system is proposed to measure a similarity between human STR (Short Tandem Repeat) based DNA (Deoxyribonucleic Acid) profiles. Moreover, various defuzzification methods are also tested to observe their behavior on different DNA data characteristics. Experiment on real human STR based DNA profile data shows that the proposed DNA similarity matching produces more realistic similarity values compared to those of the conventional one. Experiment on various defuzzification methods on DNA similarity matching shows that Sugeno defuzzification method is more suitable than those of other defuzzification methods.