1.Bilateral accessory central cusp of 2nd deciduous molar: an unusual occurrence
S. Nagarajan M.P. Sockalingam ; Alida Mahyuddin
Archives of Orofacial Sciences 2009;4(1):22-24
Presence of accessory cusp on the occlusal surface of a
tooth may occasionally pose problems to dentists’. Although its presents may not be a cause for alarm in most instances, nevertheless it can lead to serious consequences if it is damaged.
This report describes a rare finding of bilateral central accessory cusp seen on the occlusal surface of both the 2nd maxillary deciduous
molars and the need for continuous dental surveillance and
preventive measures have been highlighted.
2.Complicated crown root fracture treatment option: a case report
S. Nagarajan M.P. Sockalingam ; Alida Mahyuddin
Archives of Orofacial Sciences 2009;4(1):25-28
Complicated crown-root fractures are rare and often need
complex treatment planning. This paper describes a simplified treatment option for a complicated crown root fracture that minimally
encroached into the biologic region in a growing child without the need for surgery or orthodontic treatment.
3.Multiple supernumerary teeth in a child with Rubinstein-Taybi syndrome: a rare feature
Thavamalar Marimuthoo ; S. Nagarajan M.P. Sockalingam
Archives of Orofacial Sciences 2014;9(1):47-51
Rubinstein-Taybi syndrome is a multiple anomalies congenital disorder characterised by broad thumb and
halluces, facial dysmorphism with mental and growth retardation. Oral features include small mouth, retro and
micronagthic jaws, highly arched and narrow palate. Dental anomalies such as teeth with talon cusps and screwdriver
shaped permanent incisors together with crowded teeth are common features in these patients. Although hyperdontia
is said to be one of the features of this condition, nevertheless, presence of multiple supernumerary teeth has never been documented. This report highlighted a case of an eleven-year-old boy with Rubinstein-Taybi syndrome referred for unerupted permanent incisors who exhibited multiple supernumerary teeth radiographically.
Tooth, Supernumerary
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Child
4.Oligodontia: challenges in dental rehabilitation
Nur Adilah Ahmad Othman ; S. Nagarajan M.P. Sockalingam
Archives of Orofacial Sciences 2014;9(2):96-100
Oligodontia, although rare, may have significant impact on the quality of life of those affected with it. Provision of restorative treatment for these patients can be very challenging and demanding for clinicians, especially during the active growth phase. Nevertheless, the dental needs of these patients are real and should be addressed appropriately. The present case report described a restorative rehabilitative plan and execution of different restorative treatment modalities in a 14-year-old patient with oligodontia. The challenges faced in the provision of dental care were highlighted. The treatment outcome showed a positive psychological impact on the well-being of the patient based on parental observations.
Anodontia
5.Comparative evaluation of the effect of a resin modified glass ionomer cement universal adhesive on the shear bond strength of glass ionomer cements
Mohd Safwani Affan Alli Awang Talip ; Ahmad Shuhud Irfani Zakaria ; S. Nagarajan M.P. Sockalingam
Archives of Orofacial Sciences 2017;12(2):95-104
The present study compared and evaluated the shear bond strength (SBS) of two types of glass
ionomer cement (GIC), Riva Self Cure HVTM (SDI Ltd., Victoria, Australia) and GC Fuji IX GP EXTRATM (GC
America Inc., Alsip, USA) with and without the use of Riva Bond LCTM (SDI Ltd., Victoria, Australia), a lighted
cured resin-modified glass ionomer cement (RMGIC) universal adhesive. Sixty extracted sound premolars with
prepared exposure of the dentine on the occlusal surface were randomly assigned into four groups according to
the tested restorative materials. Shear bond strength (SBS) tests were performed by using the Shimadzu
Universal Testing Machine at a crosshead speed of 0.5 mm/minute, and the values obtained were statistically
analysed using one-way ANOVA and Tukey tests. The inter-group comparison showed statistically significant
differences in the SBS values between all the test groups (p < 0.001). A stereomicroscope was used to assess
the modes of failure. Adhesive failures were predominant in adhesive groups (>80%) compared to higher
cohesive failures found in the non-adhesive groups (>86%). A Spearman's rho correlation test performed to
determine the association between SBS values and mode of failures had indicated positive correlations between
the adhesive failure and SBS values in the adhesive groups (rs=0.86, p<0.001; rs=0.85, p<0.001) and the
cohesive failure and SBS values in the non-adhesive groups (rs=0.87, p<0.001). These findings support the
improvement in adhesion of GICs to tooth structure with the use of RMGIC adhesive.
Glass Ionomer Cements
6.In-vitro comparative study of marginal leakage and penetration ability of moisture-tolerant and conventional resin-based pit and fissure sealants with different surface preparations
Thavamalar Marimuthooa ; Nor Atika Md Asfarb ; Mariati Abd. Rahmanb ; S. Nagarajan M.P. Sockalingam
Archives of Orofacial Sciences 2017;12(1):12-22
This in-vitro study aimed to evaluate and compare the marginal leakage and penetration ability of
a moisture-tolerant (Embrace WetBondTM) and a conventional (ClinproTM) resin-based sealants under three
different enamel surface preparations (acid etched, acid etched and saliva contaminated and bur
preparation and acid etched). One hundred and twenty extracted caries free human premolars teeth were
cleaned and randomly divided into six groups of equal numbers, according to the type of sealants used and
surface preparations. All the sealed teeth were subjected to thermocycling and immersed in a methylene
blue dye. Each tooth was then embedded into acrylic resin before it was sectioned into four sections per
tooth. Marginal leakage and unfilled surface area (indicating penetration depth of resin) were then
measured using an optical 3D measurement device (Alicona Infinite Focus®). Both sealants exhibited
comparable proportion of marginal leakage on acid etched only surfaces. Moisture-tolerant sealant showed
the least proportion of marginal leakage on bur prepared and etched surfaces. Presence of saliva has
detrimental effect on adhesion of both sealants. Nevertheless, depth of penetration of sealant into the
fissures is comparable with both sealant types irrespective of the surface preparations.
Pit and Fissure Sealants
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Dental Caries
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Dental Materials