A cone-beam computed tomographic study of root canal systems in mandibular premolars in a Turkish population: Theoretical model for determining orifice shape
ABSTRACT Objective: The purposes of this retrospective study were to represent a newly designed theoretical model for determining orifice shape and morphologic properties of mandibular premolars and to correlate these findings with each other. Materials and Methods: A total of 287 mandibular premola...
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| Veröffentlicht in: | European journal of dentistry 2015-01, Vol.9 (1), p.011-019 |
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| creator | Arslan, Hakan Capar, Ismail Davut Ertas, Elif Tarim Ertas, Huseyin Akcay, Merve |
| description | ABSTRACT
Objective:
The purposes of this retrospective study were to represent a newly designed theoretical model for determining orifice shape and morphologic properties of mandibular premolars and to correlate these findings with each other.
Materials and Methods:
A total of 287 mandibular premolar images obtained from 88 patients by cone-beam computed tomography were included in this study. The measurements were performed below the cementoenamel junction, and different orifice configurations were defined in accordance with various ratios. The age and gender of the patient, the tooth type and position, the number of roots, orifice configuration, root canal configuration, presence of C-shaped canal, and the presence of radicular groove were recorded. It was also recorded whether the root canal becomes round or not and if any, length of the root canal from the orifice to the section in which it becomes round. Furthermore, the theoretical model for determining orifice shape was defined after measurements. The orifice shape was determined as round, oval, flat, keyhole-shaped, and T-shaped, and orifices with short, normal length, and long isthmus. Statistical analyses were performed using Chi-square and Spearman's rank correlation tests (
P
= 0.05).
Results:
Orifice configurations were, usually, flat (37%), or keyhole-shaped (23%). The prevalence of T-shaped was found to be 3.8%. The prevalence of C-shaped canals was found to be 2.1%. The percentage of root canals that became round in the middle or apical thirds was 95.1%. Radicular grooves were detected in 37 (24%) of first premolars and six (4.5%) of second premolars. Statistical analysis revealed that the mean length of distance until the canal reached a round shape varied according to age group (
r
= −0.270;
P
< 0.001). There was a statistically significant difference between radicular groove and tooth type (
P
< 0.001).
Conclusions:
The mean length of distance until the canal reached a round shape correlated with the patient's age. The new theoretical model could be beneficial to determine orifice configurations. |
| doi_str_mv | 10.4103/1305-7456.149632 |
| format | Article |
| fullrecord | <record><control><sourceid>gale_pubme</sourceid><recordid>TN_cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_4319286</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><galeid>A399372687</galeid><sourcerecordid>A399372687</sourcerecordid><originalsourceid>FETCH-LOGICAL-c4492-4b62e4b88518d83cd8b2dace4ec7a12fadda071bd28d28c5c4c2a65498f8d2aa3</originalsourceid><addsrcrecordid>eNp1kl2L1DAUhoso7ofeeyUBQfZmZps0TVMvhGHxCxa8Ga9DmpxOszZJTVJhfoz_1dQZhx1QEsjh5HlfyMlbFK9wuaa4rG5xVdarhtZsjWnLKvKkuDy2GH16qmt2UVzF-FCWrGJt-7y4IHWDK9rwy-LXBinvYNWBtLmy05xAo-St3wU5DUahmGa9R75HwfuElHRyRHEfE9iIjENWOm26eZQBTQGsz8WfvkTbOXw3cUCTn_J1Mt69Q9sBfIBkVDaxXsOIeh-QhgTBGmfcDvlgeqMAxUFO8KJ41ssxwsvjeV18-_hhe_d5df_105e7zf1KUdqSFe0YAdpxXmOueaU074iWCiioRmLSS61l2eBOE563qhVVRLKatrzPDSmr6-L9wXeaOwtagUtBjmIKxsqwF14acX7jzCB2_qegFW4JZ9ng5mgQ_I8ZYhLWRAXjKB34OQrMat6UjJImo28O6E6OIIzrfXZUCy42VdtWDWF8odb_oPLSYM3yY73J_TPB20eCAeSYhujHeZl7PAfLA6iCjzFAf3omLsWSKrHERiyxEYdUZcnrx-M5Cf7GKAO3ByANBiyIBz-HnJP4f8vfe3LZIw</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1658706427</pqid></control><display><type>article</type><title>A cone-beam computed tomographic study of root canal systems in mandibular premolars in a Turkish population: Theoretical model for determining orifice shape</title><source>PubMed Central Free</source><source>Thieme Connect Journals Open Access</source><source>EZB-FREE-00999 freely available EZB journals</source><creator>Arslan, Hakan ; Capar, Ismail Davut ; Ertas, Elif Tarim ; Ertas, Huseyin ; Akcay, Merve</creator><creatorcontrib>Arslan, Hakan ; Capar, Ismail Davut ; Ertas, Elif Tarim ; Ertas, Huseyin ; Akcay, Merve</creatorcontrib><description>ABSTRACT
Objective:
The purposes of this retrospective study were to represent a newly designed theoretical model for determining orifice shape and morphologic properties of mandibular premolars and to correlate these findings with each other.
Materials and Methods:
A total of 287 mandibular premolar images obtained from 88 patients by cone-beam computed tomography were included in this study. The measurements were performed below the cementoenamel junction, and different orifice configurations were defined in accordance with various ratios. The age and gender of the patient, the tooth type and position, the number of roots, orifice configuration, root canal configuration, presence of C-shaped canal, and the presence of radicular groove were recorded. It was also recorded whether the root canal becomes round or not and if any, length of the root canal from the orifice to the section in which it becomes round. Furthermore, the theoretical model for determining orifice shape was defined after measurements. The orifice shape was determined as round, oval, flat, keyhole-shaped, and T-shaped, and orifices with short, normal length, and long isthmus. Statistical analyses were performed using Chi-square and Spearman's rank correlation tests (
P
= 0.05).
Results:
Orifice configurations were, usually, flat (37%), or keyhole-shaped (23%). The prevalence of T-shaped was found to be 3.8%. The prevalence of C-shaped canals was found to be 2.1%. The percentage of root canals that became round in the middle or apical thirds was 95.1%. Radicular grooves were detected in 37 (24%) of first premolars and six (4.5%) of second premolars. Statistical analysis revealed that the mean length of distance until the canal reached a round shape varied according to age group (
r
= −0.270;
P
< 0.001). There was a statistically significant difference between radicular groove and tooth type (
P
< 0.001).
Conclusions:
The mean length of distance until the canal reached a round shape correlated with the patient's age. The new theoretical model could be beneficial to determine orifice configurations.</description><identifier>ISSN: 1305-7456</identifier><identifier>EISSN: 1305-7464</identifier><identifier>DOI: 10.4103/1305-7456.149632</identifier><identifier>PMID: 25713478</identifier><language>eng</language><publisher>A-12, Second Floor, Sector -2, NOIDA -201301, India: Thieme Medical and Scientific Publishers Private Ltd</publisher><subject>Medical examination ; Original ; Original Article ; Physiological aspects ; Root canal therapy ; Tooth roots</subject><ispartof>European journal of dentistry, 2015-01, Vol.9 (1), p.011-019</ispartof><rights>COPYRIGHT 2015 Medknow Publications and Media Pvt. Ltd.</rights><rights>Copyright: © European Journal of Dentistry 2015</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4492-4b62e4b88518d83cd8b2dace4ec7a12fadda071bd28d28c5c4c2a65498f8d2aa3</citedby><cites>FETCH-LOGICAL-c4492-4b62e4b88518d83cd8b2dace4ec7a12fadda071bd28d28c5c4c2a65498f8d2aa3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4319286/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4319286/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,20891,27924,27925,53791,53793,54587,54615</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25713478$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Arslan, Hakan</creatorcontrib><creatorcontrib>Capar, Ismail Davut</creatorcontrib><creatorcontrib>Ertas, Elif Tarim</creatorcontrib><creatorcontrib>Ertas, Huseyin</creatorcontrib><creatorcontrib>Akcay, Merve</creatorcontrib><title>A cone-beam computed tomographic study of root canal systems in mandibular premolars in a Turkish population: Theoretical model for determining orifice shape</title><title>European journal of dentistry</title><addtitle>Eur J Dent</addtitle><description>ABSTRACT
Objective:
The purposes of this retrospective study were to represent a newly designed theoretical model for determining orifice shape and morphologic properties of mandibular premolars and to correlate these findings with each other.
Materials and Methods:
A total of 287 mandibular premolar images obtained from 88 patients by cone-beam computed tomography were included in this study. The measurements were performed below the cementoenamel junction, and different orifice configurations were defined in accordance with various ratios. The age and gender of the patient, the tooth type and position, the number of roots, orifice configuration, root canal configuration, presence of C-shaped canal, and the presence of radicular groove were recorded. It was also recorded whether the root canal becomes round or not and if any, length of the root canal from the orifice to the section in which it becomes round. Furthermore, the theoretical model for determining orifice shape was defined after measurements. The orifice shape was determined as round, oval, flat, keyhole-shaped, and T-shaped, and orifices with short, normal length, and long isthmus. Statistical analyses were performed using Chi-square and Spearman's rank correlation tests (
P
= 0.05).
Results:
Orifice configurations were, usually, flat (37%), or keyhole-shaped (23%). The prevalence of T-shaped was found to be 3.8%. The prevalence of C-shaped canals was found to be 2.1%. The percentage of root canals that became round in the middle or apical thirds was 95.1%. Radicular grooves were detected in 37 (24%) of first premolars and six (4.5%) of second premolars. Statistical analysis revealed that the mean length of distance until the canal reached a round shape varied according to age group (
r
= −0.270;
P
< 0.001). There was a statistically significant difference between radicular groove and tooth type (
P
< 0.001).
Conclusions:
The mean length of distance until the canal reached a round shape correlated with the patient's age. The new theoretical model could be beneficial to determine orifice configurations.</description><subject>Medical examination</subject><subject>Original</subject><subject>Original Article</subject><subject>Physiological aspects</subject><subject>Root canal therapy</subject><subject>Tooth roots</subject><issn>1305-7456</issn><issn>1305-7464</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>0U6</sourceid><recordid>eNp1kl2L1DAUhoso7ofeeyUBQfZmZps0TVMvhGHxCxa8Ga9DmpxOszZJTVJhfoz_1dQZhx1QEsjh5HlfyMlbFK9wuaa4rG5xVdarhtZsjWnLKvKkuDy2GH16qmt2UVzF-FCWrGJt-7y4IHWDK9rwy-LXBinvYNWBtLmy05xAo-St3wU5DUahmGa9R75HwfuElHRyRHEfE9iIjENWOm26eZQBTQGsz8WfvkTbOXw3cUCTn_J1Mt69Q9sBfIBkVDaxXsOIeh-QhgTBGmfcDvlgeqMAxUFO8KJ41ssxwsvjeV18-_hhe_d5df_105e7zf1KUdqSFe0YAdpxXmOueaU074iWCiioRmLSS61l2eBOE563qhVVRLKatrzPDSmr6-L9wXeaOwtagUtBjmIKxsqwF14acX7jzCB2_qegFW4JZ9ng5mgQ_I8ZYhLWRAXjKB34OQrMat6UjJImo28O6E6OIIzrfXZUCy42VdtWDWF8odb_oPLSYM3yY73J_TPB20eCAeSYhujHeZl7PAfLA6iCjzFAf3omLsWSKrHERiyxEYdUZcnrx-M5Cf7GKAO3ByANBiyIBz-HnJP4f8vfe3LZIw</recordid><startdate>201501</startdate><enddate>201501</enddate><creator>Arslan, Hakan</creator><creator>Capar, Ismail Davut</creator><creator>Ertas, Elif Tarim</creator><creator>Ertas, Huseyin</creator><creator>Akcay, Merve</creator><general>Thieme Medical and Scientific Publishers Private Ltd</general><general>Medknow Publications and Media Pvt. Ltd</general><general>Medknow Publications & Media Pvt Ltd</general><scope>0U6</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>201501</creationdate><title>A cone-beam computed tomographic study of root canal systems in mandibular premolars in a Turkish population: Theoretical model for determining orifice shape</title><author>Arslan, Hakan ; Capar, Ismail Davut ; Ertas, Elif Tarim ; Ertas, Huseyin ; Akcay, Merve</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4492-4b62e4b88518d83cd8b2dace4ec7a12fadda071bd28d28c5c4c2a65498f8d2aa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Medical examination</topic><topic>Original</topic><topic>Original Article</topic><topic>Physiological aspects</topic><topic>Root canal therapy</topic><topic>Tooth roots</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Arslan, Hakan</creatorcontrib><creatorcontrib>Capar, Ismail Davut</creatorcontrib><creatorcontrib>Ertas, Elif Tarim</creatorcontrib><creatorcontrib>Ertas, Huseyin</creatorcontrib><creatorcontrib>Akcay, Merve</creatorcontrib><collection>Thieme Connect Journals Open Access</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>European journal of dentistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Arslan, Hakan</au><au>Capar, Ismail Davut</au><au>Ertas, Elif Tarim</au><au>Ertas, Huseyin</au><au>Akcay, Merve</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A cone-beam computed tomographic study of root canal systems in mandibular premolars in a Turkish population: Theoretical model for determining orifice shape</atitle><jtitle>European journal of dentistry</jtitle><addtitle>Eur J Dent</addtitle><date>2015-01</date><risdate>2015</risdate><volume>9</volume><issue>1</issue><spage>011</spage><epage>019</epage><pages>011-019</pages><issn>1305-7456</issn><eissn>1305-7464</eissn><abstract>ABSTRACT
Objective:
The purposes of this retrospective study were to represent a newly designed theoretical model for determining orifice shape and morphologic properties of mandibular premolars and to correlate these findings with each other.
Materials and Methods:
A total of 287 mandibular premolar images obtained from 88 patients by cone-beam computed tomography were included in this study. The measurements were performed below the cementoenamel junction, and different orifice configurations were defined in accordance with various ratios. The age and gender of the patient, the tooth type and position, the number of roots, orifice configuration, root canal configuration, presence of C-shaped canal, and the presence of radicular groove were recorded. It was also recorded whether the root canal becomes round or not and if any, length of the root canal from the orifice to the section in which it becomes round. Furthermore, the theoretical model for determining orifice shape was defined after measurements. The orifice shape was determined as round, oval, flat, keyhole-shaped, and T-shaped, and orifices with short, normal length, and long isthmus. Statistical analyses were performed using Chi-square and Spearman's rank correlation tests (
P
= 0.05).
Results:
Orifice configurations were, usually, flat (37%), or keyhole-shaped (23%). The prevalence of T-shaped was found to be 3.8%. The prevalence of C-shaped canals was found to be 2.1%. The percentage of root canals that became round in the middle or apical thirds was 95.1%. Radicular grooves were detected in 37 (24%) of first premolars and six (4.5%) of second premolars. Statistical analysis revealed that the mean length of distance until the canal reached a round shape varied according to age group (
r
= −0.270;
P
< 0.001). There was a statistically significant difference between radicular groove and tooth type (
P
< 0.001).
Conclusions:
The mean length of distance until the canal reached a round shape correlated with the patient's age. The new theoretical model could be beneficial to determine orifice configurations.</abstract><cop>A-12, Second Floor, Sector -2, NOIDA -201301, India</cop><pub>Thieme Medical and Scientific Publishers Private Ltd</pub><pmid>25713478</pmid><doi>10.4103/1305-7456.149632</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | European journal of dentistry, 2015-01, Vol.9 (1), p.011-019 |
| issn | 1305-7456 1305-7464 |
| language | eng |
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| source | PubMed Central Free; Thieme Connect Journals Open Access; EZB-FREE-00999 freely available EZB journals |
| subjects | Medical examination Original Original Article Physiological aspects Root canal therapy Tooth roots |
| title | A cone-beam computed tomographic study of root canal systems in mandibular premolars in a Turkish population: Theoretical model for determining orifice shape |
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