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Fulltext Osteo-odonto-keratoprosthesis for end-stage cornea blindness

Wong HS, Then KY, Ramli R

Med J Malaysia, 2011 Oct;66(4):369-70.
PMID: 22299563 MyJurnal

We report the first case of Osteo-odonto-keratoprosthesis (OOKP) who successfully underwent surgery in Malaysia following a grade 4 (severe) chemical injury in both eyes in 2006. The patient's left eye was eviscerated and his right eye underwent penetrating keratoplasty. However, the corneal graft failed and became opaque. His right eye could only perceive light. The OOKP was offered to him hoping to recover some functional vision. He underwent a 2-stage surgery to implant the OOKP into his right eye. However, 2 months post-operation, he developed vitreous haemorrhage. A successful pars plana vitrectomy (PPV) was performed via the limited view through the lens. He attained a final visual acuity of 6/60 (N36). He was able to mobilize more independently, feed, dress himself and read large print.

Matched MeSH terms: Tooth Root/transplantation*
Fulltext Ocular injuries and severe ocular surface diseases in Malaysia

Tan AK, Pall S

Med J Malaysia, 2011 Oct;66(4):284-5.
PMID: 22299542 MyJurnal
Matched MeSH terms: Tooth Root/transplantation*
Fulltext Imaging of Osteo-odontokeratoprosthesis(OOKP) Using Multidetector Computed Tomography: A UKMMC Experience

Abu Bakar N, Lee CL

Med J Malaysia, 2013;68(1):73-5.
PMID: 23466774

Osteo-odontokeratoprosthesis (OOKP) surgery is a technique used to replace damaged cornea in blind patients for whom cadaveric transplantation is not feasible. OOKP surgery is a complex procedure requiring lifetime follow-up. The preservation of the osteo-odontolamina is the vital feature in maintaining the stability of the OOKP. Early detection of lamina resorption enables early prophylactic measures to be taken and prevent resorption-related complications. This case illustrates the radiological findings of the first OOKP surgery in Malaysia and the role of multidetector computed tomography (MDCT) in postoperative management of OOKP surgery.

Matched MeSH terms: Tooth Root
A teratoma at the root of the nose

MARSDEN AT

Med J Malaya, 1959 Dec;14:106-10.
PMID: 14421490
Matched MeSH terms: Tooth Root*
Age estimation using third molar development

Phrabhakaran N

Malays J Pathol, 1995 Jun;17(1):31-4.
PMID: 8907002

Teeth are the most durable structures in the human body. The pattern of their development has been used as a credible technique of age determination of unidentified bodies. Dental age estimation is by comparison of the dental status of an individual with published dental surveys. The third molars are the last teeth to erupt and are regarded as the most variable in the dentition. Nevertheless, radiographs depicting their growth have been used to determine the chronological age. A case for actual need for age estimation using a developing third molar is presented here.

Matched MeSH terms: Tooth Root
Dental abnormalities of a long-term survivor of a childhood hematological malignancy: literature review and report of a case

Zarina RS, Nik-Hussein NN

J Clin Pediatr Dent, 2005;29(2):167-74.
PMID: 15719924

The treatment of haematological malignancy is multimodal and involves chemotherapy, radiotherapy and/or bone marrow transplants. With the advancement in cancer therapy, there is an increase in the survival of many children with childhood haematological malignancy. In addition, the late effect of the oncology treatment to the orofacial and dental development becomes significant in terms of the potential clinical impact that may affect the quality of life of the survivor. The severity of the long-term effects is dependent on the age of the child at initiation of treatment and whether chemotherapy is combined with radiation or not. The dental treatment may become more complex if the patient requires advanced restorative dental care and the roots malformation may complicate orthodontic treatment. Therefore these patients may require a scheduled careful preventive programme, long-term follow up, with prophylactic treatment and intervention at appropriate time to minimize the consequences of the disease and the given therapy.

Matched MeSH terms: Tooth Root/abnormalities; Tooth Root/drug effects*; Tooth Root/growth & development
Early eruption and advanced root development of the permanent cuspids in a six-year-old boy

Nik-Noriah, Nik-Hussein

J Clin Pediatr Dent, 1992;16(2):112-4.
PMID: 1498045

A case report showing the eruption of the left maxillary and mandibular permanent cuspids in a six-year-old boy, is presented. In addition, the dental age of all the permanent cuspids as seen by the eruption and tooth development suggested that the cuspids are comparable to those seen in a 13 to 14 year-old-boy. A search of the literature has not revealed any such reports.

Matched MeSH terms: Tooth Root/growth & development*
Double rooted mandibular canines--report of three cases

Teck LS

Dent J Malaysia Singapore, 1968 Feb;8(1):33-5.
PMID: 5248556
Matched MeSH terms: Tooth Root/abnormalities
Prevention of alveolar bone resorption by the use of autogenous root implants

Lam RV, Hong EN, Ann LS

Dent J Malaysia Singapore, 1971 Oct;11(2):4-6.
PMID: 5290957
Matched MeSH terms: Tooth Root
The incidence of the three-rooted lower first permanent molar in Malay people

Jones AW

Singapore Dent J, 1980 May;5(1):15-7.
PMID: 6935768
Matched MeSH terms: Tooth Root/abnormalities*
Structural break unit-root tests: an empirical study of Malaysian equity markets

Chin WC, Zaidi Isa

Sains Malaysiana, 2009;38.

This research investigated the unit-root tests using nonparametric sequences-reversals (S-R), Phillip-Perron (PP) tests and parametric Augmented Dickey-Fuller (ADF) test for the Malaysian equity indices. Under the considerations of drift and structural break, it was found that during the restructuring period after the Asian financial crisis, most of the indices provided evidences against the unit-root tests. These results are somewhat contrasted with the conventional unit-root tests that ignored the impact of structural changes. In addition, the S-R tests were found to have little power to identify the deviations from the unit-root even after the inclusion of structural break.

Matched MeSH terms: Tooth Root
Frequency, size and location of apical and lateral foramina in anterior permanent teeth

Abdullah D, Kanagasingam S, Luke D

Sains Malaysiana, 2013;42:81-84.

The aim of the study was to determine the frequency, size and location of apical and lateral foramina on anterior teeth. A total of 100 anterior teeth consisting of maxillary and mandibular incisors and canines were fixed in 10% formalin. Periodontal tissue remnants were mechanically removed and teeth were stained in 2% aqueous silver nitrate. The teeth were dried and examined using a Leica MZ 7.5 zoom stereomicroscope. The size of apical and lateral foramina and their distance from the anatomical apex of the tooth were measured directly using a calibrated eyepiece scale. Accessory foramina more than 1.8 mm from the apex were regarded as lateral foramina. Eighteen percent of teeth possessed more than one apical foramen. Seven teeth (three maxillary centrals, three maxillary canines, one mandibular lateral) had 11 lateral foramina each. The mean diameter of the lateral foramina was 0.14 mm (SD = 0.08) and their mean distance from the apex was 4.49 mm (SD = 2.63, range 1.9-10.5 mm). Multiple foramina were most common on maxillary canines and least common on maxillary laterals. The mean diameter of apical foramina for all teeth possessing a single foramen was 0.35 mm (SD = 0.10) and the mean apical foramen diameter for all teeth with multiple apical foramina was 0.22 mm (SD = 0.08). Most anterior teeth possess one apical foramen and no lateral foramina; about 20% possessed more than one apical foramen and about 10% possessed one or more lateral foramina. These findings should be considered when root-treating anterior teeth.

Matched MeSH terms: Tooth Root
A unit root test based on the modified least squares estimator

Wararit Panichkitkosolkul

Sains Malaysiana, 2014;43:1623-1633.

A unit root test based on the modified least squares (MLS) estimator for first-order autoregressive process is proposed and compared with unit root tests based on the ordinary least squares (OLS), the weighted symmetric (WS) and the modified weighted symmetric (MWS) estimators. The percentiles of the null distributions of the unit root test are also reported. The empirical probabilities of type I error and powers of the unit root tests were estimated via Monte Carlo simulation. The simulation results showed that all unit root tests can control the probability of type I error for all situations. The empirical power of the test is higher than the other unit root tests, and Apart from that, the and tests also provide the highest empirical power. As an illustration, the monthly series of U.S. nominal interest rates on three-month treasury bills is analyzed.

Matched MeSH terms: Tooth Root
Reliability of panoramic-radiograph to determine the position of third-molar from inferior-alveolar-canal

Azizah Ahmad Fauzi, Mohamed Ebrahim Parker, Norval E., Phrabhakaran N

Sains Malaysiana, 2017;46:59-65.

Cone-beam-computed-tomography (CBCT) has been useful in providing insights of relevant anatomy prior to surgical
procedures, including the assessment of the proximity of impacted mandibular-third-molar to the inferior-alveolar-canal
(IAC). It is important to understand the reliability of conventional panoramic-radiograph in the assessment of this criterion
since it is more commonly used as first line radiographic approach due to its availability and lower radiation dose. This
study aimed to investigate the reliability of conventional panoramic-radiograph in the evaluation of the proximity of
impacted mandibular-third-molar root tip to the IAC by correlating the results with CBCT. A total of 65 root tips of impacted
mandibular-third-molars that had both panoramic radiographs and CBCT images were included in this retrospective study.
Two trained observers participated in all image evaluations. A prepared standard 1 cm ruler was used to measure the
proximity of the third-molar root apices to the IACs. Measurements recorded in this study were categorized into positive
(root apex above a roof of IAC), zero (root apex was superimposed on IAC) and negative (root apex below a roof of IAC).
Data analysis was carried out using student t-test. In this study, both observers recorded statistically significant differences
in the measurement between third-molars root apices and the IAC from panoramic radiographs and CBCT images. The low
reliability of panoramic radiograph to assess the vertical proximity between these two anatomical structures suggests
the importance of additional assessment with CBCT in cases where panoramic radiograph shows superimposition of the
third molar root on the roof of the canal and presence of root below the roof of the IAC.

Matched MeSH terms: Tooth Root
Radiographic artifact mimicking root fracture

Shanmuhasuntharam P

Oral Surg. Oral Med. Oral Pathol., 1993 Jul;76(1):131.
PMID: 8351112
Matched MeSH terms: Tooth Root/injuries*
Evaluation of interfacial adaptation and penetration of bioceramic-based sealers in oval root canals: A confocal laser scanning microscope study

Chew ST, Eshak Z, Al-Haddad A

Microsc Res Tech, 2023 Jul;86(7):754-761.
PMID: 37078493 DOI: 10.1002/jemt.24323

To assess the interfacial adaptation and penetration depth of three different bioceramic-based sealers (CeraSeal, EndoSeal MTA, Nishika Canal Sealer BG) compared to an epoxy resin-based sealer (AH Plus) in oval root canals. Fourty extracted single-rooted mandibular premolar with oval canal were prepared and randomly allocated according to the obturation into; CeraSeal, EndoSeal MTA, Nishika Canal Sealer BG and AH Plus. The roots were sectioned at 3, 6 and 9 mm from the apex. The sealer adaptation and the penetration depth were evaluated under confocal laser scanning microscope. One-way ANOVA and Repeated measure ANOVA were used to statistically analyze the data. Nishika Canal Sealer BG showed significantly higher sealer adaptation than EndoSeal MTA (P root canal sealers have some percentage of gaps and vary in their penetration capability into dentinal tubules. Nishika Canal Sealer BG has significantly better sealer adaptation to root dentinal walls than that of EndoSeal MTA at the apical and middle third but not significantly different from other type of sealers used. Nishika Canal Sealer BG has significantly better penetration depth than AH Plus and EndoSeal MTA at the coronal third of radicular dentin.

Matched MeSH terms: Tooth Root/anatomy & histology
Root Coverage of Palatal Recession Using Epithelial Embossed Connective Tissue: A Case Report

Rath A, Fernandes B, R PH, Varma S, Pavuluri AK

J Int Acad Periodontol, 2017 Jan 02;19(1):10-14.
PMID: 31473707

Labial and buccal gingival recession is a common finding in the adult population, which can occur due to various factors. When present, it can lead to an unesthetic appearance and can cause hypersensitivity. However, very limited literature is available regarding the incidence of palatal gingival recession. Many times it goes unnoticed during routine clinical examinations. Although there are no esthetic concerns in these regions, recession can cause sensitivity and pose a technical challenge in surgical correction because of poor accessibility and visibility. This case reports the treatment of a single palatal recession defect using an epithelial embossed connective tissue graft. The 12-month follow-up of the case showed significant root coverage (93.6%) and decreased sensitivity. The advantage of the harvested graft was that the connective tissue was not exposed, as it was tucked into the underlying flap, and the mucosal contour was maintained.

Matched MeSH terms: Tooth Root
Fulltext A Comparative Evaluation of Five Obturation Techniques in the Management of Simulated Internal Resorptive Cavities: An Ex Vivo Study

Elenjikal MJ, Latheef AA, Kader MAM, Ganapathy S, Mohamed AB, Sainudeen SS, et al.

J Pharm Bioallied Sci, 2019 May;11(Suppl 2):S450-S456.
PMID: 31198386 DOI: 10.4103/JPBS.JPBS_75_19

Background: Root resorption is the loss of dental hard tissues as a result of clastic activities. It might be broadly classified into external or internal resorption by the location of the resorption in relation to the root surface. the various techniques used these days for filling internal resorption include warm condensation, vertical condensation, core techniques, thermoplasticized gutta-percha, warm vertical compaction, and cold lateral condensation.
Objectives: The aims and objectives of this study were to compare the quality of root fillings in artificially created internal resorption cavities filled with warm vertical compaction, lateral condensation, Obtura II along with System B, E and Q plus along with System B, and Thermafil, and to calculate the percentage of gutta-percha, sealer, and voids using an ImageJ software.
Results: Results between the warm vertical compaction (group I), lateral condensation (group II), Obtura II with System B (group III), E and Q plus with System B (group IV), and Thermafil (group V), group III showed the highest percentage of gutta-percha plus sealer and gutta-percha, and least number of voids, which was statistically significant (P < 0.000).
Conclusion: It can be concluded that Obtura II along with System B was found to be the most suitable obturation technique for the management of teeth exhibiting internal resorption. Thermafil was found to give the poorest obturation quality when used to fill the teeth with internal resorption. Similarly, lateral condensation technique was observed to show maximum sealer and hence was not ideal for the management of internal resorptive cavities.

Matched MeSH terms: Tooth Root
Fulltext The second mesiobuccal canal in three-rooted maxillary first molar of Karnataka Indian sub-populations: A cone-beam computed tomography study

Kewalramani R, Murthy CS, Gupta R

J Oral Biol Craniofac Res, 2019 08 31;9(4):347-351.
PMID: 31528537 DOI: 10.1016/j.jobcr.2019.08.001

Introduction: Elusive second mesiobuccal canal (MB2) in maxillary first molar are often missed during endodontic therapy and are a major cause of treatment failures. Its prevalence is known to vary among different populations and there is limited information on its prevalence in Indian population.
Aim: This study investigated the prevalence and location of second mesiobuccal (MB2) canal in mesiobuccal root of maxillary first molar using cone beam computed tomography (CBCT) images in an Indian population.
Materials and methods: CBCT images of 598 three rooted maxillary first molars were studied. In each CBCT image, the floor of pulp chamber was located and advanced by 2 mm to standardize the observation for MB2 canal. Its location was determined in relation to mesiobuccal (MB1) and palatal (P) canal.
Statistical analysis: The data was analysed using descriptive statistics. The presence of MB2 canal was correlated with age, gender and tooth position using Chi square test.
Results: The prevalence of MB2 canal in three rooted maxillary first molar was 61.9%. It was seen that the prevalence of MB2 was highest in 20-40years age group (67.4%) followed by > 40 years (57.5%) and lowest in <20 years (50.6%) and the difference was statistically significant (p = 0.005). It is located mesiopalatally; 2.5 mm ± 0.6 mm palatally and 1.0 ± 0.4mmmesially to the MB1 canal or present directly on the line joining the MB1 and palatal canal.
Conclusion: There is a high probability of finding MB2 canal in Indian patients. The access cavity must be modified from a triangular shape to rhomboid shape. Troughingmesiopaltally (about 2.5 mm palatally and 1 mm mesially) from MB1 to a depth of about 2 mm from the floor of pulp chamber may be necessary for locating MB2 canal.

Matched MeSH terms: Tooth Root
Fulltext Dental age estimation of growing children by measurement of open apices: A Malaysian formula

Cugati N, Kumaresan R, Srinivasan B, Karthikeyan P

J Forensic Dent Sci, 2015 Sep-Dec;7(3):227-31.
PMID: 26816464 DOI: 10.4103/0975-1475.172445

BACKGROUND: Age estimation is of prime importance in forensic science and clinical dentistry. Age estimation based on teeth development is one reliable approach. Many radiographic methods are proposed on the Western population for estimating dental age, and a similar assessment was found to be inadequate in Malaysian population. Hence, this study aims at formulating a regression model for dental age estimation in Malaysian children population using Cameriere's method.
MATERIALS AND METHODS: Orthopantomographs of 421 Malaysian children aged between 5 and 16 years involving all the three ethnic origins were digitalized and analyzed using Cameriere's method of age estimation. The subjects' age was modeled as a function of the morphological variables, gender (g), ethnicity, sum of normalized open apices (s), number of tooth with completed root formation (N0) and the first-order interaction between s and N0.
RESULTS: The variables that contributed significantly to the fit were included in the regression model, yielding the following formula: Age = 11.368-0.345g + 0.553No -1.096s - 0.380s.No, where g is a variable, 1 for males and 2 for females. The equation explained 87.1% of total deviance.
CONCLUSION: The results obtained insist on reframing the original Cameriere's formula to suit the population of the nation specifically. Further studies are to be conducted to evaluate the applicability of this formula on a larger sample size.
KEYWORDS: Age estimation; Cameriere's method; dental age; forensic odontology

Matched MeSH terms: Tooth Root

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