The clinico-stastistical analysis of the treatments of the 139 Ameloblastomas

Young-Min Shin; Ji-Hoon Park; Jin-Wook Kim; Tae-Geon Kwon; Sang-Han Lee; Chin-Soo Kim

doi:10.5125/jkaoms.2011.37.4.287

Journal List > J Korean Assoc Oral Maxillofac Surg > v.37(4) > 1032479

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Shin, Park, Kim, Kwon, Lee, and Kim: The clinico-stastistical analysis of the treatments of the 139 Ameloblastomas

Original Article

J Korean Assoc Oral Maxillofac Surg 2011;37(4):287-294.

Published online: 7 January 2011

DOI: https://doi.org/10.5125/jkaoms.2011.37.4.287

The clinico-stastistical analysis of the treatments of the 139 Ameloblastomas

Young-Min Shin, Ji-Hoon Park, Jin-Wook Kim, Tae-Geon Kwon, Sang-Han Lee, Chin-Soo Kim

Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, Korea

Young-Min Shin Department fo Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University 188-1 Samduck-dong 2 ga, Jung-gu, Daegu, 700-412, Korea TEL: +82-53-600-7551 FAX: +82-53-426-5365 E-mail: jhlove41@naver.com

Received 26 March 201120 July 2011 Accepted 25 July 2011

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Introduction

Ameloblastoma is a benign but locally invasive tumor with a high recurrence rate. The aim of this study was to make an easier diagnosis and treatment planning of ameloblastoma.

Materials and Methods

From January 1993 to October 2009, 139 cases from 123 patients, who had been diagnosed with ameloblastoma through radiologic and biopsy in the department of oral and maxillofacial surgery of Kyunpook National University, were selected as the subjects in this study. According to the medical charts, 9 factors (age, gender, location, chief complaints, duration, radiographic findings, size and recurrence) concerned in deciding the treatment method and the relevance between each factor and the treatment methods were examined.(Conservative treatments were marsupialization, enucleation, curettage and lateral decortication. Radical treatments included block excision, resection and hemisection)

Results

In the patients under the age of 20, 77.14% had conservative treatments, whereas 22.86% underwent radical treatments. In the patients over the age of 20, 44.23% were treated conservatively treatments, and 55.77% underwent radical treatments. For unilocular types, 28.57% had conservative treatments, whereas 71.43% had radical treatments. For the multilocular types, 66.67% underwent conservative treatments, and 33.33% had radical treatments. For the primary cases, 58.68% were treated conservatively and 41.32% had radical treatments. For the recurrent cases, 16.67% and 83.33% underwent conservative and radical treatments, respectively.

Conclusion

There was statistical significance in the factors affecting the treatment methods, such as age, radiographic findings and recurrence.

Keywords: Ameloblastoma, Clinco-statistical analysis, Conservative treatment, Radical treatment

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Fig. 1.

Diagrammatic representation of the various surgical treatment of the Ameloblastoma. A) Marsupialization: Removal of the upper part of the lesion for the making of intraoral opening, B) Enucleation: Removal of a lesion by shelling it out intact, C) Curettage: Surgical scraping of the wall of a cavity within soft tissue or bone for the removal of its contents, D) Lateral decortications with reposition: Surgical curettage after lateral bony window opening following reposition, E) Block excision: Surgical removal of a tumor intact, with a rim of uninvolved bone with maintaining continuity of the inferior or posterior borders of the mandible, F) Resection: Surgical removal of a segment of the mandible or maxilla without maintaining the continuity of the bone, G) Hemisection: Surgical removal of one side of the mandible or maxilla.

Fig. 2.

Anatomical location.

Table 1.

Use of treatment method

Treatment		Primary		Recurrent
Treatment		No. of cases	%	No. of cases	%
Conservative treatment	Marsupialization	5	4.13	0	0
	Enucleation	33	27.27	3	16.67
	Curettage	26	21.49	0	0
	Lateral decortication	7	5.79	0	0
Radical treatment	Block excision	26	21.49	7	38.89
	Resection	15	12.40	3	16.67
	Hemisection	9	7.44	5	27.78
Total		121	100	18	100

Table 2.

Frequency of the treatment in relation to all factors

		Conservative tx.		Radical tx.		Total		Statistical significanc
		No. of cases	%	No. of cases	%	No. of cases	%	Statistical significanc
Sex	Male	44	56.41	34	43.59	78	100	χ²=0.719
	Female	30	49.18	31	50.82	61	100	P=0.397
Age (yr)	Under 20	27	77.14	8	22.86	35	100	χ²=11.375
	Above 20	46	44.23	58	55.77	104	100	P=0.001
Location	Maxilla	6	50.00	6	50.00	12	100	χ²=0.033
	Mandible	67	52.76	60	47.24	127	100	P=0.855
Chief complaint	Pain	42	56.76	32	43.24	74	100	χ²=1.140
	Another complaint	31	47.69	34	52.31	65	100	P=0.286
Duration (mo)	Under 9.5	55	61.11	35	38.89	90	100	χ²=0.858
	Above 9.5	16	51.61	15	48.39	31	100	P=0.354
X-ray finding	Unilocular	60	66.67	30	33.33	90	100	χ²=18.495
	Multilocular	14	28.57	35	71.43	49	100	P=0.000
Size (mm)	Under 48	39	50.64	38	49.36	77	100	χ²=2.403
	Above 48	35	56.45	27	43.55	62	100	P=0.121
Recurrence	Primary	71	58.68	50	41.32	121	100	χ²=11.108
	Recurred	3	16.67	15	83.33	18	100	P=0.001

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