1.Rare Morphology of The Third Maxillary Molar and Potential Complications in its Extraction
Siti Mazlipah Ismail ; Firdaus Hariri
Annals of Dentistry 2020;27(1):66-68
There is a wide variation in the morphology of third maxillary molar which can be difficult to be identified
radiographically. We present a case of a 26 year-old Yemeni female patient presented with difficult extraction
of her left maxillary third molar. The extracted tooth showed a rare variation of root morphology, having four
roots with three roots curving palatally at the apices. This report emphasized the potential complex
morphological variation of maxillary third molar which may lead to the difficulty of a routine straight forward
procedure thus needing careful extraction maneuvering to prevent any complications.
2.Translation and Validation of the Malay Version of Oral Health Impact Profile for Temporomandibular Disorders
Muzaffar Apipi ; Adrian Ujin Yap ; Siti Mazlipah Ismail ; Mohd Khairul Anwar Mohd Tahir ; Kathreena Kadir ; Zamros Yuzadi Mohd Yusof
Archives of Orofacial Sciences 2022;17(2):169-182
ABSTRACT
Most prior oral health-related quality of life (OHRQoL) research concerning temporomandibular
disorders (TMDs) had utilised generic OHRQoL measures. This study aimed to translate and
validate the Malay version of Oral Health Impact Profile for TMDs (OHIP-TMDs), a TMDs-specific
OHRQoL tool, for use in Malay literate populations. The translation and cross-cultural adaptation of
the OHIP-TMDs into the Malay language were implemented according to the international guidelines.
A convenience sample of 243 subjects completed the Malay OHIP-TMDs (OHIP-TMDs-M) as well
as the Malay Short Oral Health Impact Profile (S-OHIP-M), Global Oral Health ratings (GOH-M)
and Fonseca Anamnestic Index (FAI-M). The OHIP-TMDs-M was re-administered to a subset of 40
subjects after two weeks for test-retest reliability. Concurrent, convergent and discriminative validity were
assessed using Spearman’s rank correlation, Kruskal Wallis and Mann-Whitney U tests with significance
level set at p < 0.05. The OHIP-TMDs-M was found to have excellent internal consistency (Cronbach’s
alpha = 0.98) and test-retest reliability (intraclass correlation coefficient = 0.99, p < 0.001). A strong
and positive correlation with S-OHIP-M (rs = 0.74) was observed, and OHIP-TMDs-M scores differed
significantly between subjects with disparate GOH-M ratings (p < 0.001). Furthermore, the OHIP-TMDs-M was able to discriminate between subjects with and without TMDs. The OHIP-TMDs-M was
found to have excellent reliability and good validity. It is a promising tool for assessing TMDs-specific
OHRQoL in Malay literate populations.
Quality of Life
;
Oral Health
;
Temporomandibular Joint Disorders
3.Detection of Genetic Alterations in Oral Squamous Cell Carcinoma Using Multiplex LigationDependent Probe Amplification (MLPA)
Zachary Yong Wei Ern ; Karen-Ng Lee Peng ; Thomas George Kallarakkal ; Zainal Ariff Abdul Rahman ; Siti Mazlipah Ismail ; Mannil Thomas Abraham ; Tay Keng Kiong ; Rosnah Binti Zain ; Zuraiza Mohamad Zaini
Annals of Dentistry 2022;29(2022):36-43
Deletions and amplifications of genes often occur during multistep progression from oral precancer, seen as
oral epithelial dysplasia (OED) to cancerous stage. These genetic alterations could be used as markers to aid in
detection of oral squamous cell carcinomas (OSCC). This study explored the use of multiplex ligation-dependent
probe amplification (MLPA) technique in detecting OSCC and OED specific genetic alterations. MLPA was used
to detect gains and losses of 106 genes in DNA extracted from frozen tissue samples of 10 OSCC and 10 noncancer patients. Two biopsies of OED were analyzed to explore the alterations in oral potentially malignant
disorders. There were significant differences (p<0.001) in the number of alterations in OSCC and dysplasia
compared to non-cancer samples respectively. The most frequently altered genes in OSCC were PTP4A3,
RECQL4, ATM, and KLK3 (60%). Five genes (MYC, SLA, TNFRSF1A, MESDC1, MIF) were altered in 50% of OSCC
samples. These nine genes were specific to OSCC samples (p<0.05). Some genes, including MYB, MET, CASP2,
SLA and PTEN occurred in 50% of OED samples. MLPA was able to detect genetic alterations, that are present
only in the OSCC samples and showed potential to be used as an adjunctive tool in early diagnosis of OSCC.