Clinical analysis of nonsyndromic oligodontia phenotypes

doi:10.7518/hxkq.2024.2023203

Abstract

Abstract:

Objective To provide references, this study investigated the clinical characteristics of patients with nonsyndromic oligodontia. Methods The information of 178 patients with oligodontia was collected, including histories, oral examinations, and panoramic radiographs. Tooth agenesis characteristics were calculated and evaluated. All the data were statistically analyzed with SPSS 24.0 software. Results No significant difference in the number of missing teeth was found between sexes nor between the right and left sides, and congenitally missing teeth affected the maxillary arch (P<0.05). The highest prevalence of tooth agenesis was observed in the mandibular second premolars. In the maxillary arch, the most common pattern of tooth agenesis was agenesis of the bilateral first and second premolars. The agenesis of the bilateral second premolars was observed in the mandibular arch. The prevalence of a symmetric pattern between the right and left quadrants was significantly higher than that of matched patterns between the maxillary and mandibular antagonistic quadrants. Approximately 16.85% of patients with nonsyndromic oligodontia were affected by other tooth-related anomalies. Conclusion The common patterns of tooth agenesis were successfully identified in patients with nonsyndromic oligodontia. Dentists need to provide multidisciplinary treatments for patients with nonsyndromic oligodontia because of variations in occluding and full-mouth tooth agenesis patterns.

Key words: nonsyndromic oligodontia, dental aplasia, tooth agenesis pattern, panoramic radiographs, statistical analysis

CLC Number:

Shu Lihong, Tang Zichun, Wang Haixia, Cao Li, Li Hu. Clinical analysis of nonsyndromic oligodontia phenotypes[J]. West China Journal of Stomatology, 2024, 42(1): 89-96.

Figures/Tables 14

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Tab 1

Frequency distribution of the numbers of missing teeth per patient between maxillary and mandibular arches and between right and left sides

性别	例数	缺牙数目
性别	例数	上颌	下颌	左侧	右侧
合计	178	4.42 $± 1.74$	3.74 $± 2.02$	4.08 $± 1.65$	4.07 $± 1.54$
男	97	4.43 $±$ 1.73	3.85 $± 2.10$	4.15 $± 1.65$	4.12 $± 1.60$
女	81	4.40 $±$ 1.76	3.62 $± 1.93$	4.00 $± 1.64$	4.01 $± 1.49$

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象限	排名	牙位缺失模式	例数	百分比（累积百分比）/%
右上（q1）	1	45	45	25.28（25.28）
	2	0	31	17.42（42.70）
	3	5	18	10.11（52.81）
	4	345	11	6.20（59.01）
	5	34	10	5.62（64.63）
左上（q2）	1	45	42	23.60（23.60）
	2	5	18	10.11（33.71）
	3	245	15	8.43（42.14）
	4	345	15	8.43（50.57）
	5	25	10	5.62（56.19）
左下（q3）	1	5	48	26.97（26.97）
	2	45	42	23.60（50.57）
	3	15	10	5.62（56.19）
	4	0	7	3.93（60.12）
	5	4	6	3.37（63.49）
右下（q4）	1	5	49	27.53（27.53）
	2	45	37	20.79（48.32）
	3	15	12	6.74（55.06）
	4	25	10	5.62（60.68）
	5	0	7	3.93（64.61）

牙弓	排名	牙位缺失模式	例数	百分比（累积百分比）/%
上颌（q1和q2）	1	q1：45 q2：45	32	17.98（17.98）
	2	q1：5 q2：5	10	5.62（23.60）
	3	q1：345 q2：345	7	3.93（27.53）
	4	q1：0 q2：45	5	2.81（30.34）
	5	q1：23 q2：23	4	2.25（32.59）
下颌（q3和q4）	1	q3：5 q4：5	31	17.42（17.42）
	2	q3：45 q4：45	28	15.73（33.15）
	3	q3：45 q4：5	7	3.93（37.08）
	4	q3：5 q4：45	5	2.81（39.89）
	5	q3：5 q4：0	4	2.25（42.14）

单侧咬合	排名	牙位缺失模式	例数	百分比（累积百分比）/%
右侧（q1和q4）	1	q1：45 q4：45	17	9.55（9.55）
	2	q1：45 q4：5	13	7.30（16.85）
	3	q1：0 q4：5	6	3.37（20.22）
	4	q1：0 q4：45	5	2.81（23.03）
	5	q1：5 q4：5	5	2.81（25.84）
左侧（q2和q3）	1	q2：45 q3：45	22	12.36（12.36）
	2	q2：45 q3：5	13	7.30（19.66）
	3	q2：345 q3：5	8	4.49（24.15）
	4	q2：25 q3：5	7	3.93（28.08）
	5	q2：4 q3：45	5	2.81（30.89）

牙弓	缺牙模式左右侧分布情况
牙弓	对称	不对称
上颌	84（47.19）	94（52.81）
下颌	100（56.18）	78（43.82）
上颌和下颌	61（34.27）	117（65.73）
上下左右4个象限	7（3.93）	171（96.07）

部位	缺牙模式上下颌分布情况
部位	对称	不对称
左侧	27（15.17）	151（84.83）
右侧	35（19.66）	143（80.34）
左侧和右侧	17（9.55）	161（90.45）
上下左右4个象限	7（3.93）	171（96.07）